A fun, silly soundtrack. Eight sound designers are credited, but only the latter four credited worked as composers at Capcom - which leaves Naoaki Iwami, Makoto Tomozawa, Naoshi Mizuta, and Shusaku Uchiyama.
Gamerips floating around online assign 4 letter titles to the tracks, so I assume the game has a sound test with these names? Here's my guesses on who composed what; Mizuta's are confirmed thanks to correspondence with him, and the rest I'm 95% sure should be correct. Some of Tomozawa's are quite obvious due to their quantized sequencing and instruments I recognize from Mega Man 7, while some of Uchiyama's are obvious due to their atmospheric electronic feel, as well as instruments heard in his Mega Man 8 work.
- TITL - Naoaki Iwami?
- DEMO - Makoto Tomozawa?
- MODE - Naoshi Mizuta (confirmed)
- CHAR - Makoto Tomozawa?
- FRE1 - Shusaku Uchiyama?
- FRE2 - Naoshi Mizuta (confirmed)
- FRE3 - Naoaki Iwami?
- IDE1 - Naoshi Mizuta (confirmed)
- IDE2 - Naoshi Mizuta (confirmed)
- TOP - Naoaki Iwami?
- 2CHA - Naoshi Mizuta (confirmed)
- LAS - Makoto Tomozawa?
- SETU - Makoto Tomozawa?
- VS - Naoshi Mizuta (confirmed)
- TTL1 - Naoshi Mizuta (confirmed)
- TTL2 - Shusaku Uchiyama?
- CHIN - Naoshi Mizuta (confirmed)
- YUSH - Shusaku Uchiyama?
- ZANE - Naoshi Mizuta (confirmed)
- GP1 - Shusaku Uchiyama?
- GP2 - Shusaku Uchiyama?
- SOGO - Makoto Tomozawa?
- STAF - Makoto Tomozawa?
- WADA - Naoaki Iwami? (despite the name, I don't think Hiroyuki Wada actually composed it)
- RICH - Makoto Tomozawa? (despite the name, I don't think Atsushi Mori composed this either)
- OPEN - Shusaku Uchiyama?
- CAMP - Makoto Tomozawa?
- EVNT - Naoaki Iwami?
- FUAN - Shusaku Uchiyama?
- ENKA - Naoshi Mizuta (confirmed)
- KAI - Shusaku Uchiyama?
- VALE - Naoshi Mizuta (confirmed)
- RAVE - Naoshi Mizuta (confirmed)