Go out and rent better yet buy this dvd or video. Grateful Dawg. It's a documentary about Jerry Garcia and Dave Grisman.It has some private jam session footage and concert footage. Also has some great interviews in it. I have a few of their shows and they are amazing, but watching this video really gave me an understanding on how they met and just how much work they put into their music. Jerry really loved bluegrass and the feeling I get from watching this movie is that if he was still around he'd probably be playing a lot of bluegrass while having breaks from touring with the Dead. So go out and get this, it's a must for any Dead fan or bluegrass fan.