Unfortunately, Select doesn't seems to changes the selected special ability. I'm always stuck with the musicbox :S
I'm not able to duplicate this issue in 1 vs. CPU using Mesen emu. What emulator or physical system are you playing on? And what mode 1 vs. CPU, 1 vs 1, or 2 vs 2?
Sorry, It's now working fine. I guess it was a problem with my system.
