Sort:  

Well....March31, 10-5 @ La Mesa"s Griffin Park: Blues Harp Fest. They have a contest, so bring your harmonica.

I dont have a harmonica, but that looks awesome. Just checked out some youtube videos from years past to listen. Shall we make another meet up for the 31st at Harp Fest???

I've gone a few times. Very nice and casual. Bring a chair, a hat, something to drink. They do have food there. And, get there early - parking can get to be challenging. Yeah, just let people know and see who comes. Cool. :-))

Im also a fan of bluegrass jams. There used to be a dive bar in NYC where anyone could bring any instrument and everyone in the bar just played together along with the band.