311, Dirty Heads, and Ocean Alley share a co-headlining concert at the Toyota Pavilion at Concord, an outdoor amphitheatre in Concord, California. The bill blends alternative rock, reggae and hip-hop-influenced sounds—pairing 311's rap-rock fusion with Dirty Heads' reggae-tinged hip-hop and Ocean Alley's psychedelic/reggae-rock—making it a notable multi-genre summer show at a major Bay Area venue.