Leonard Bernstein, Aaron Copland, George Gershwin — all composers with a popular following. The program planned by the Louisville Master Chorale (50-plus voices strong), with pianist Dror Biran and other musicians, is a celebration of their music. It features Bernstein’s “Chichester Psalms,” Copland’s “Fanfare for the Common Man” and “The Promise of Living,” plus selections from Gershwin’s “Porgy and Bess” and a personal favorite “Rhapsody in Blue.” For added enjoyment and understanding of the music, John R. Hale, UofL’s director of liberal studies, will present a pre-concert lecture at 2 p.m.