The song, recorded two years ago in Demarco's garage, was uploaded to Lindsey Jordan's personal YouTube account
The September event will see a host of artists donating proceeds from merch sales to charities of their choice
The new record features their label boss .Paak alongside Mac DeMarco, Snoop Dogg and other stars
Watch Mac drop the news during the latest episode of NME's Friends Like These
The musical pals interview each other
The gig in May will be their first time back to the country in three years
The Salt Lake City music festival takes place in May
Mac's annual festive cover comes alongside an official video which sees an inflatable Christmas tree wandering through town
Dawson says the song is inspired by “the chaoticness that comes with the idea of tomorrow”
Lent pleaded guilty to the 2018 crime in April of this year, with DeMarco "immediately" removing him from his band