So I have college jazz combo auditions this Sunday, and the requirements are that I play 4 assigned tunes from memory and the auditions are in groups, essentially it's like a jam session with assigned tunes. So I memorized the changes and memories, and I feel pretty comfortable walking on the tunes but my problem is that I can't come up with good solo ideas based on the changes. When I solo I get too stuck on remembering the chord progression that I end up just slopping on through the changes. I'm more comfortable soloing when I have the changes in front of me, which is odd because I don't seem to have the same problem with my walking (which is obviously more important and what really counts in a bass player, but I don't want to come off as a bad soloist, especially since I'm a freshman) So I would appreciate any advice.