Resurrecting an old Yamaha Japanese singing synth from the early 2000's which also contains polyphonic VL, and it has taken me three days of codex work, but damn if it doesn't play like it should now. Feels amazing to hear these files outside a 9x VM with questionable sound card/sample rates. Wow!
Source now available on my github: https://github.com/OnjLouis/syxg100-hybrid