 There are terrific musical ensembles across the United States, and we're going to feature some of them in honor of the long Fourth of July holiday weekend. Hear Renaissance dances played by an exciting brass ensemble from Evanston, Illinois, the Bach Choir of Bethlehem, Pennsylvania, and New York's Orpheus Chamber Orchestra. That's on Sunday Baroque, starting at 7 a.m. this Sunday on 91.1 WSHU and online at WSHU.org.