So an old friend from way back calls me and asks to fill in with his very busy and popular club band. I say yes before I recall that I haven't done a gig like this in more than 10 years. I play several jazz gigs a year, and one or two pickup jobs, but that's it. He and I used to play clubs together like 15 years ago. I've two weeks to prepare. I have no fretted basses in sight. Any tips??