Musicians from local bluegrass ensemble Siskiyou Summit will host a bluegrass jam at 7 p.m. Tuesday, March 12, at Caldera Tap House, 31 Water St. Join mandolin player Jeff Jones, dobro player Bob Evoniuk, guitarist Glenn Freese and banjo player Rick Nelson and show off your fingerpickin’ and bluegrass chops. There is no cost to sit in.