@thor I assumed you were referring to the drama that always seems to pop up in a band. Anything worth doing is worth doing well. There's not much room for error or even trouble with an instrument. My guitars had knife edge bridge designs so when a string broke it wasn't in tune.

My point would be that even if it isn't a serious arrangement, it can be problematic to find good musicians who aren't dicks and play that same subset of music. Not to mention what type of Jazz it is. Jazz can be very simple or extremely technical and pushing Music Theory in new directions.