Think of the Roches’ local concert date as something of a shooting star. The sisterly trio that first came on the scene in the late 1970s and immediately made a name for themselves with engaging storytelling, intricate three-part harmonies and compelling, optimistic music just don’t tour much anymore. Lucky us, the sisters have decided to perform a holiday season show here.

“It just sort of happened,” youngest sister Suzzy Roche said about a call from a Michael Jaworek, promoter for the Birchmere and co-founder of the Washington Area Music Association (which originated the Wammies). “He just happened to call or e-mail and say ‘I know you aren’t doing gigs, but would you want to do a gig here?’ I asked everybody and it came together.”