The 17th Avenue Allstars are celebrating 20 years as one of Denver, Colorado’s top musical acts singing contemporary a cappella. The Allstars have performed across the United States and opened for National Acts such as: BB King, The Temptations, Mel Torme, and Robert Cray. Named the official anthems singers of the Denver Broncos they’ve experienced a wide range of a cappella performance opportunities including shows for US[…]