Genre, Shmengre. Good music is good music. It's criminal to even say O.A.R. and Robert Randolph in the same sentence.
I was at Bonnaroo and the best shows I saw were Secret Machines and The Word (Robert Randolph, Luther et al from the North Mississippi Allstars, and John Medeski). Could not be more different.
Sometimes people on this board (ergo people everywhere) get hung up on labels. My friends say Secret Machines are a Pink Floyd rip-off. They say RR&TFB are a hippie jam band. Alrighty then, stay home and embrace your labels. I kinda say that you have to experience it before you can judge.
Go see Robert Randolph. You may not have a musical epiphany, but it may come close.
