Performance listings, starting April 20

APRIL 20-21

BRISTOL

77TH ANNUAL OM SHOW. “Wish Upon A Star.” Friday at 7:30 p.m. Saturday at 2 and 7:30 p.m. St. Paul Catholic High School, 1001 Stafford Ave., Bristol. $20 reserved. $15 general admission. (860) 583-4734. www.bbgc.org