Jordan Curet/Aspen Daily News
Fitz and the Tantrums kick off the Jazz Aspen Snowmass Labor Day Experience in Snowmass Town Park on Friday night. Performances continue today with Jimmy Cliff at 5 p.m. and No Doubt at 7:30 p.m.; and on Sunday with The Fray at 5 p.m. and Lenny Kravitz at 7:30 p.m.