And now hopefully Emkay understands why I specifically said an MSX, not a Konami Nemesis board.
Just kidding, he'll never get it.
"POKEY should have no problem reproducing the start theme. Heck, even the MSX version gets it right."
It's just those lazy statement from above, that make people guessing wrong possibilities to the A8. You'd need 2 POKEYs to get the musical feature of the MSX, driving 30% of the 6502 CPU, where the MSX almost needs no CPU ...
OK, you could do PWM , using almost all CPU with one POKEY.... Musicwise every of those old chips is better than POKEY. But people still like to mix things up.