Erin Halloran and Nurlan Abougaliev demonstrate a dance from Pittsburgh Ballet Theatre's "American Rhythms" running through Sunday at the Byham Theater, 101 Sixth St., Pittsburgh. The show features three distinct ballets including a world premiere with live music by Charlie Thomas' Drifters and Pure Gold. Performances start at 7:30 p.m. tonight, at 8 p.m. Friday and Saturday and at 2 p.m. Sunday. Tickets range from $20.50 to $88.50. Call 412-456-6666.