re: My morning jacket. jam band?

First of all, frick jamon. They have such potential and yet fail so hard. I especially can't stand Warren Haynes' disgusting pig of a wife.

My Morning Jacket is an interesting band and somewhat difficult to pigeonhole. Unlike virtually all jam bands they are accepted by indie fans and even have a critically acclaimed album in indie circles (Z).

Although their live shows contain little to no improv, I'd still label them a jamband. They certainly cater to a jamband crowd. The multiple guitars do in fact jam from time to time. They have a lot of guests and frequently collaborate with other artists. Also, I really dig their choice in covers.