Re: Extending the capabilities of the 264 series Yeah I think the MSX sounds a bit weak from those video's. A bit like a children's keyboard that's not even 3 octaves.
The YM2612 found in a Megadrive has recently done this back in 2019 for a game called Tanzer. There are 11 tunes in the vid and each one is marked so you can manual skip to the next. I believe only the drums are samples... Title tune is very cool but have a listen to those Stage X tunes!