I played everything here, using two very different guitars for the melody parts. The Bass is my Jan Knooren four string custom Music man style bass, which I recorded using a Line 6 UX-2 interface, selecting the Ampeg portaflex sound with a moderate amount of overdrive, to give it an upright bass kind of growl. I don't consider myself to be a Jazz musician but this was fun to do, I hope you guys agree.