Photo: Gabrielle Lurie, The Chronicle
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Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Corin Roddick of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Corin Roddick of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Megan James, vocalist of Purity Ring performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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A crowd gathers to hear Sylvan Esso perform during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
A crowd gathers to hear Sylvan Esso perform during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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A crowd gathers to hear Sylvan Esso perform during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
A crowd gathers to hear Sylvan Esso perform during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Amelia Meath, vocalist of Sylvan Esso performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Amelia Meath, vocalist of Sylvan Esso performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Amelia Meath, vocalist of Sylvan Esso performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Amelia Meath, vocalist of Sylvan Esso performs during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Staff at the Treasure Island Music festival set up the stage for band Purity Ring during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Staff at the Treasure Island Music festival set up the stage for band Purity Ring during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Staff at the Treasure Island Music festival set up the stage for band Purity Ring during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Staff at the Treasure Island Music festival set up the stage for band Purity Ring during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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People wait for Purity Ring to perform during a delay, and after the James Blake concert was cancelled, on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016. less
People wait for Purity Ring to perform during a delay, and after the James Blake concert was cancelled, on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, ... more
Photo: Gabrielle Lurie, The Chronicle
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The sun comes out briefly on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
The sun comes out briefly on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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A puddle of water reflects concert-goers during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
A puddle of water reflects concert-goers during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Nick Billings (center) cheers while Deafheaven performs at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Nick Billings (center) cheers while Deafheaven performs at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Peter Manzo (center) and Erica Pitcher (right) dance while Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Peter Manzo (center) and Erica Pitcher (right) dance while Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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People dance as they listen to Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
People dance as they listen to Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Niko Arnold, 12, plays with bubbles during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Niko Arnold, 12, plays with bubbles during the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Kelsey Mayfield (left) and Caroline Rhoads (right) dance in the mud, while Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016. less
Kelsey Mayfield (left) and Caroline Rhoads (right) dance in the mud, while Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. ... more
Photo: Gabrielle Lurie, The Chronicle
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People wear ponchos in the rain as they listen as Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
People wear ponchos in the rain as they listen as Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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People wear ponchos in the rain as they listen to Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
People wear ponchos in the rain as they listen to Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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George Clarke of Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
George Clarke of Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Nick Billings (center) cheers while Deafheaven performs at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Nick Billings (center) cheers while Deafheaven performs at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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YoungGean Kim (center,right), visiting from South Korea, wears a poncho to shield from the rain, while listening to Car Seat Headrest perform, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016. less
YoungGean Kim (center,right), visiting from South Korea, wears a poncho to shield from the rain, while listening to Car Seat Headrest perform, at the second day of the Treasure Island Music Festival in San ... more
Photo: Gabrielle Lurie, The Chronicle
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Nick Billings (center) cheers while Deafheaven performs at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Nick Billings (center) cheers while Deafheaven performs at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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George Clarke of Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
George Clarke of Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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(l-r) Apollo Green, Darryl Naito and Geoffrey Bywater dance as they listen to Christine and The Queens perform in colorful ponchos at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016. less
(l-r) Apollo Green, Darryl Naito and Geoffrey Bywater dance as they listen to Christine and The Queens perform in colorful ponchos at the second day of the Treasure Island Music Festival in San Francisco, ... more
Photo: Gabrielle Lurie, The Chronicle
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Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Darryl Naito shows off his pizza temporary tattoo while listening to Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016. less
Darryl Naito shows off his pizza temporary tattoo while listening to Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, ... more
Photo: Gabrielle Lurie, The Chronicle
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(l-r) Kurt Lighthouse, Nick Harwayne, Daniel Pascal and Camille Cohen dance while Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016. less
(l-r) Kurt Lighthouse, Nick Harwayne, Daniel Pascal and Camille Cohen dance while Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, ... more
Photo: Gabrielle Lurie, The Chronicle
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Christine and The Queens performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Christine and The Queens performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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(l-r) Louis Doneche, Mikael Jorda, and Charlie Weil of France, dance as they listen to Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016. less
(l-r) Louis Doneche, Mikael Jorda, and Charlie Weil of France, dance as they listen to Christine and The Queens perform at the second day of the Treasure Island Music Festival in San Francisco, California, on ... more
Photo: Gabrielle Lurie, The Chronicle
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Christine and The Queens performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Christine and The Queens performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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(l-r) Kira Papineau, Nori Nakayama and Jason Terk listen to Car Seat Headrest perform, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
(l-r) Kira Papineau, Nori Nakayama and Jason Terk listen to Car Seat Headrest perform, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Nick Harwayne (center) and Daniel Pascal (right) dance while Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Nick Harwayne (center) and Daniel Pascal (right) dance while Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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(l-r) Harry Heiser, Kurt Lighthouse, Nick Harwayne, Daniel Pascal and Camille Cohen dance while Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016. less
(l-r) Harry Heiser, Kurt Lighthouse, Nick Harwayne, Daniel Pascal and Camille Cohen dance while Car Seat Headrest performs, at the second day of the Treasure Island Music Festival in San Francisco, California, ... more
Photo: Gabrielle Lurie, The Chronicle
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Nick Billings (center right) cheers while Deafheaven performs at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Nick Billings (center right) cheers while Deafheaven performs at the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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George Clarke of Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
George Clarke of Deafheaven performs on the second day of the Treasure Island Music Festival in San Francisco, California, on Sunday, Oct. 16, 2016.
Photo: Gabrielle Lurie, The Chronicle
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Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Festival-goers cheer before Ice Cube takes the stage during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Festival-goers cheer before Ice Cube takes the stage during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Ice Cube performs during the first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Dave Bayley of Glass Animals performs with the band during first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Dave Bayley of Glass Animals performs with the band during first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Tom Krell sings with How to Dress Well during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Tom Krell sings with How to Dress Well during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Tom Krell sings with How to Dress Well during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Tom Krell sings with How to Dress Well during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Dave Bayley of Glass Animals sings off the stage during first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Dave Bayley of Glass Animals sings off the stage during first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Dave Bayley of Glass Animals performs with the band during first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Dave Bayley of Glass Animals performs with the band during first night of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Taylor Gompper jokes with friends as rain pours down during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Taylor Gompper jokes with friends as rain pours down during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Young Thug performs during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Young Thug performs during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Young Thug performs during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Young Thug performs during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Young Thug performs during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Young Thug performs during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Festival-goers take shelter as it pours down rain during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Festival-goers take shelter as it pours down rain during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Kristopher Williams, center left, dances with others during a downpour as Kamaiyah performs during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Kristopher Williams, center left, dances with others during a downpour as Kamaiyah performs during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Kamaiyah performs in the pouring rain during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Kamaiyah performs in the pouring rain during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Kamaiyah performs in the pouring rain during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Kamaiyah performs in the pouring rain during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Kamaiyah performs in the pouring rain during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Kamaiyah performs in the pouring rain during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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People shelter under a parachute during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
People shelter under a parachute during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Friends, from left, Jennifer Lee, 21, Angelica Roessert, 21, Alex Dernoncourt, 19, Jessica Hanes, 22, and Alan Martinez, 22, hang out and pose for photos with the Bay Bridge in the background as storm clouds approach during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif. less
Friends, from left, Jennifer Lee, 21, Angelica Roessert, 21, Alex Dernoncourt, 19, Jessica Hanes, 22, and Alan Martinez, 22, hang out and pose for photos with the Bay Bridge in the background as storm clouds ... more
Photo: Leah Millis, The Chronicle
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Tucker Halpern, left, and Sophie Hawley-Weld of Sofi Tukker perform during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Tucker Halpern, left, and Sophie Hawley-Weld of Sofi Tukker perform during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Tucker Halpern, left, and Sophie Hawley-Weld of Sofi Tukker perform during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Tucker Halpern, left, and Sophie Hawley-Weld of Sofi Tukker perform during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif.
Photo: Leah Millis, The Chronicle
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Friends and fellow-unicorns, from left, Peter "The Thumper" Manzo, Ambrose Colombo, Ceci Liu, Andy Tonsing and Will Broer wait for their friends to get drinks during first day of the Treasure Island music festival Oct. 15, 2016 in San Francisco, Calif. less
Friends and fellow-unicorns, from left, Peter "The Thumper" Manzo, Ambrose Colombo, Ceci Liu, Andy Tonsing and Will Broer wait for their friends to get drinks during first day of the Treasure Island music ... more
Photo: Leah Millis, The Chronicle

Rain wreaked havoc on Treasure Island Music Festival as it kicked off its 10th and final year on its namesake island on Saturday, Oct. 15. The storm caused major delays, shut down the pier where the Ferris wheel and silent disco were located, and prompted two artists — Duke Dumont and Flight Facilities — to cancel performances, while other artists like How to Dress Well had abbreviated sets.

As a result, many fans took to social media to demand refunds for their tickets, which ranged from $105 to $335. But with 11 out of 13 acts, including headliner Ice Cube, performing Saturday and no signs of canceled sets for Sunday, Allen Scott, executive vice president of Another Planet Entertainment that co-produces Treasure Island Music Festival with Noise Pop, said no refunds will be made to ticketholders.

“Yesterday we experienced several schedule delays and changes due to weather-related travel and tech issues. When these issues arose, we immediately began working behind the scenes to adjust and find solutions as quickly as possible. During this downtime, many of you grew understandably frustrated at the lack of information, and we want to apologize,” read a statement released by festival organizers just before 10:30 a.m. Sunday.

Human pinball game at Treasure Island Music Festival.

Media: rkost@sfchronicle.com / San Francisco Chronicle

“Several factors were outside of our control, including the weather and the resulting delays in performances and artist transportation,” the statement continued. “We plan to push through any weather-related issues today, and our team will make every effort possible to elevate the festival-going experience for all attendees.”

ALSO

But by then, the promise of a better day two couldn’t erase the angry comments that flooded social media feeds Saturday night. Even artists chimed in, revealing their frustrations with the festival.

“… the fest did a sh—t job accommodating everyone, especially htdw,” wrote How to Dress Well on Instagram. The act's set was cut to just 30 minutes after a heavy downpour caused “weather-related travel issues” that caught festival organizers off guard during the first day of the event.

Dumont, the London DJ who was one of the biggest names on the festival’s bill, tweeted: “Tonight several artists were unable to play, including myself, due to unsafe conditions on stage.” Later, a screenshot of a direct message conversation between Dumont and a fan began circulating on social media revealed more:

“There was no safety measures in place as they weren’t prepared. They threatened the acts with not being paid if they didn’t play, and threatened me with not being booked again. To cover their backs they got on the microphone and lied to the crowd and said I didn’t want to get wet. Disgusting festival.”

Festival officials contend that fire and safety officials onsite cleared acts to perform after the brunt of the storm passed. “We had fire inspectors onsite we were working with throughout the day. They were not involved with (Dumont’s) decision, it was solely the artist’s (choice),” said Scott.

Flight Facilities, another act whose set was canceled, was in an entirely different situation; when the group arrived and were preparing to play, Treasure Island’s producers felt that the conditions were too dangerous at the time. “Any artist that was scheduled to perform yesterday and was not able to play due to weather — Flight Facilities — was paid. We understand that. All artists were paid that could play,” Scott emphasized.

“Duke Dumont didn’t feel that the stage was safe for him even though it stopped raining and we made what we felt was a very safe environment,” Scott continued. “He felt otherwise and refused to perform. It was very frustrating to us, but that was ultimately his choice.”

Scott said Another Planet is working with singer-songwriter Tom Krell behind How To Dress Well “to see if there’s something we can do in the future.”

By early afternoon Sunday, the festival seemed to be faring better. While it seemed there were fewer people in attendance, those who did show up looked more prepared for the inclement weather. The pier, which had been closed Saturday, was open to the public with festivalgoers shopping at vendor booths, riding the Ferris wheel, dancing at the silent disco area and creating flower crowns at the crafting tent.

By the time Christine and the Queens hit the Bridge stage just before 3 p.m., the sun peeked through the clouds, with a few breaks from the drizzle.

“Look at that! The sun’s come out,” proclaimed the band’s singer Héloïse Letissier, later adding: “We’ll stay on this stage whether it rains or something else happens.”

Mariecar Mendoza is The San Francisco Chronicle arts content editor. Email: mmendoza@sfchronicle.com Twitter: @SFMarMendoza

Alyssa Pereira is the pop culture producer for SFGATE.

Chronicle reporter Ryan Kost contributed to this report.