Ava Luna.

Thursday, September 6

River Sister’s got the dual female folk harmonies, but what puts this Portsmouth act over the top are the tasty bass and drums behind that. They’re at Blue (650 Congress St., Portland) at 5 p.m. Donations encouraged (all ages). 774-4111. portcityblue.com. The funky five-some Ava Luna plays toothsome R&B flecked with rock, Gospel, reggae and other choice ingredients. Bright Boy (a.k.a. Said Anwar Cato King) opens the 8 p.m. show at The Apohadion (107 Hanover St., Portland). Tix: $8-$10 (all ages). 831-9569. theapohadiontheater.com.