What? That old junk?
Yes, indeed. The Commodore 64 was a fully programmable, 3 voice and 1 noise, polyphonic, multi-effect (via extremely rapid arpeggio) 8-bit semi-digital synthesiser with 1 bit 'retro' sampling facility.
Plus bung in MIDI cartridges, oscillation knobs, intelligent composition software, additional synth plug-ins, printer for notation work and then loop all that in with the other MIDI equipment you have and you've got more power to your elbow.
Indeed, most of Concept Single 9 was composed or recorded with the Commie using its own synth or running MIDI out to other units.
See pix and hear trax: