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Don’t let the Birchmere booking lead you to assume that Patti Rothberg is a timid folkie. There’s as much attitude as electric guitar on the singer/songwriter’s Between the 1 and the 9, and Rothberg is responsible for both. “I’ll do whatever you want me to,’’ she sings on “Forgive Me,’’ but her bristling guitar is never apologetic. With Rockwell Church at 8 p.m. at the Birchmere, 3901 Mount Vernon Ave., Alexandria. $10. (703) 549-5919. (MJ)