Listen to hymns, anthems and an original piece by a St. Louis composer at St. Louis Symphony Orchestra’s hourlong Community Concert for Dr. Martin Luther King Jr. It is the symphony’s first time holding a free concert to honor the legacy of the civil rights leader, and it will also be broadcast on St. Louis Public Radio. The orchestra will be joined by the resident choral ensemble and led by Music Director Stéphane Denève and IN UNISON Chorus Director Kevin McBeth.