Allegheny RiverStone Center for the Arts will host Donnie Rankin as “The Phantom” for a concert on the Wurlitzer organ at 7 p.m. today. Tickets are $10 at the door or $5 for those who dress in costume. Call 412-867-1816.

Renaissance and Baroque Society of Pittsburgh presents Flanders Recorder Quartet in “A Musical Banquet with J.S. Bach” at 8 p.m. Saturday in Synod Hall, 125 N. Craig St. Tickets are $20 to $35; student tickets are $10. Call 412-361-2048.