Opera Theatre of Saint Louis is set to spearhead the 15-organization virtual benefit concert “Arts United STL” on Sunday, May 31, 2020 at 7 p.m. The company will be partnering with other regional arts organizations including the Regional Arts Commission, The Big Muddy Dance Company, The Black Rep, Circus Flora, COCA, Jazz St. Louis, The Muny, Repertory Theatre of St. {…}