The Cantorei of the Church of the Blessed Sacrament perform works for the Feast of the Chair of St. Peter, including an 18-minute long commission for organ and choir by renown composer Kile Smith, who regularly has commissions with “The Crossing” of Philadelphia. Wine and hors d’oeuvres reception to follow. Details at: https://www.blessed-sacrament.org/rock. $30 at the door/$25 pre-purchase, seniors, and students. Children 12 and under are free.