Hello guys! I'm tacha and i'm feeling blessed to join here.
I've done music from my 11 years with the "Wham! The music box" program, with my first home computer, a "TK90X" (ZX Spectrum Brazilian Clone) . In the 1994 i catch to the "Fast Tracker II". In 2000 ModPlug Tracker and Guitar Pro. 2002 i worked with Cakewalk Sonar 4, Giga Studio, EWQLSO Native Instruments, EZ Drummer, "Mixing and Mastering with waves" and so ... have returned to the roots, using C64 Retroskoi , My own tracker for the ZX Spectrum + 3e (made with ZXBoriel compiled BASIC), ProTracker for the AMIGA500 ... and DefleMask, to make music for SEGA GENESIS.
Well, I tried to convert VGM to XGC with xgmtool, songs maked With DefleMask, to finaly, run this with Basiega compiled file, but... jumps me a WARNING... I think is the problem that makes MUSIC & game freeze in SEGA GENESIS with Everdrive or any emulator.
I have already tried to import almost totally empty projects, with a single pattern, and with a single instrument, I jump the same mistake.
"Waning: more then 6 key command key on or off in a single frame!"
i have no idea what is this 
a pic:
Anybody can give me a hand on this?
The game will be finished as soon as I get a solution, hehehe
well, eternally grateful.
Regards!