More of a blues man but thanks for post'in up about it, that is a big line up.
If you get a chance check out Charlie Musselwhite, he is more blues then bluegrass, and he is a harmonica master. I saw him open for Etta James and John Lee Hooker about a year before he passed, and the three of them put on a great show. At one point Etta had Charlie's head pressed deep in her large chest, I don't know how he could breath but still he did not miss a note!
More on him here: charliemusselwhite.com