FWIW Fire Pro Wrestling World seems to now have the functionality and the mod tools to do this, judging from a distance: https://retronauts.com/article/504/fire-pros-journey-through-early-access-continues-with-new-update
A mod with the characters as wrestlers + the tunes as the intro music for them, you guys should have that as part of the release.
This sounds pretty good! Well, 3:28 seconds is a decent track length, so I'm not sure you need to do anything else. Maybe someone more familiar with jazz composition/arrangement could comment on arrangement ideas? As for a saxophonist, I think XPRTnovice plays the saxophone and he's quite good at it, too. Maybe he would be willing to help out?