If you pay attention, you'll see this early MSX port of Zaxxon (above) is a straight-through port of the ColecoVision version (below). Both the CV and the MSX1 share the same Texas Instruments (TI) TMS99x8A VDP and Zilog Z80A CPU, but the sound effects on the MSX are different - it uses the General Instruments (GI) AY-3-8910 sound chip rather than the TI SN76489AN sound chip as used on the CV.

Therefore, I'd like to wonder what the sound effects for the CV Donkey Kong would sound like if ported to the MSX1?

~Ben