What happens when you gather a group of classically trained musicians, mix in a healthy dose of Louisiana funk courtesy of a New Orleans upbringing, and infuse them with mysterious alter egos bound only by their imagination? Quite likely you would end up with an irreverent, genre-bending ensemble much like Jonny Sketch & the Dirty Notes. This collective crew of fun-loving, funky flared performers play an endlessly fresh and danceable buffet of great music when they perform on national tours. Coming to Marin this week, Jonny Sketch & the Dirty Notes bring down the house on Thursday, Aug. 28, at 19 Broadway Club, 17 Broadway Blvd., Fairfax. 9pm. $10. 415.459.1091.