Oh man JD Weaver is a killer player and super nice dude as well!
I played a festival a couple years back that he and Raul were playing as well, so I had a nice hang with him and the band. Definitely an underrated player both as far as his note choice, technique and tone.
Was he playing that beat up, faded 78' Antigua P bass with the maple board? That bass sounded like thunder live!