Philip Barnes, Artistic Director of the St. Louis Chamber Chorus, talks about the final concert of the season: Nations United. The performance, which takes place on Sunday, May 26 at 3pm at John Burroughs School, features a rarely heard work by Benjamin Britten as well as music of Ludwig van Beethoven, Sydney Guillaume, and others that celebrates humanity. For tickets and more information, visit www.chamberchorus.org/tickets.