Every third Thursday evening of the month, Zuma Coffee becomes a crowded bluegrass and old-time music venue. Those who want to get a seat inside the place should arrive a good bit earlier than the 7 p.m. start time. The eager-to-play musicians often get going before seven, and the gathering crowd grows large as a result. The jam session is part jam and part stage show. The musicians face the audience and not each other, as is the customary arrangement at a mountain jam session, and most stand to play, rather than sitting. All musicians who want to join in and play are welcomed, regulars or not, and a place in the line is made available. The jam session is open to everyone and focuses on old-time and bluegrass music. Listeners are welcome. The coffee is tasty and dinner is served!