Turnstile's Brendan Yates also joined Boygenius for a performance of 'Satanist' at the festival
The rocker died "peacefully" according to a statement shared by his family.
Proceeds will benefit those affected by the Maui wildfires.
Two songwriters will receive the annual award, which includes a $40,000 (£31,784) stipend
"I'm in no matter what" The post
The veteran singer-songwriter is celebrating key anniversaries with Death Cab for Cutie and The Postal Service.
The guitarist had previously suggested onstage that "a woman is a woman and a man is a man" Th
"From the beginning, I’ve been impressed by their musicality and talent," said Jon Foreman.
The performance is a celebration of the 10th anniversary of their debut album The post
