LexX said:
I'm not in favor for many fan edits really but something just came up to my mind when listening the ROTJ soundtrack. Jabba's theme or his background music isn't really menacing enough, there are just some weird trombones or something and not enough creepiness that would make the palace scary and that the rebels might not survive. So if there's any music that would fit better that would be a nice change.

I don't know if their is anything that could replace his theme. It is too recognizable. Its good enough. The Tuba is an instrument that represents every fat guy.