Acoustic strummers of all experience levels are invited to learn how to back up a jig, especially for contra dance tunes. Slumberjack Radio multi-instrumentalist Steve Pasque leads listening and technique development exercises, along with an exploration of rhythm-playing for contra dances. 12:30–2:20 p.m., Pittsfield Grange, 3337 Ann Arbor–Saline Rd. $15 or pay what you can. Free. (734) 709–8748.