Rushing Beat goes in the growing list of games that require a better master cycle emulation of the main/sound cpus, if you want to run it on MESS right now pause the emu just after the disclaimer, change the clocks to maincpu = 80% and soundcpu = 160% and unpause the emu...
It looks like black magic, but it WORKS!!!
Thanks a lot Kale!
P.S. - sorry about the double post