Whether being the supportive spouse or simply taking the backup role he’s played for two decades, Saturday Night Live band leader G.E. Smith lets wife Taylor Barton claim the spotlight in their band, the roots-folk-rock Generic Blondes. Barton’s voice and melodies are worthy of the attention, although some of the lyrics struggle merely to achieve the generic. At 10 p.m. at the 9:30 Club’s Atlantis, 930 F St. NW. $5. (202) 393-0930. (MJ)