Riot Fest organizers said that to celebrate the festival's 20th anniversary this year, 20 bands will be playing 20 full-album sets, including headliner Weezer.

Twenty bands will play full album sets for Riot Fest’s 20th anniversary this summer, the music festival announced Thursday. The full list includes: Weezer: “The Blue Album” Sex

Weezer, and Green Day headlining. It’s the 20th anniversary of the Chicago festival, and they’re celebrating by having 20 of the bands do one of their respective albums in full.