What's interesting here, is to that to me, the "enhanced" Castlvania III soundtrack on the Famicom sounds like it would sound if it was run through the Turbo's soundchip.
That's because Konami's special soundchip technology sounds similar to the PC Engine. FDS games use the FDS's internal soundstuff, where Konami's carts sometimes have special sound chip excitement.
Check out any MSX games using their SCC chip:
Totally sounds like the PCE. Konami is awesome.
I can't speak for the Famicom chip, but the SCC has 5 channels instead of 6 like PCE... and there is no stereo panning. So, MSX people kinda envy our sound chip in that regard.