Like many of you, I am a DAW based studio musician, so I have no sequences to contribute, but I do have lots of info:
If any of you remember "Monster Dan" from the Transoniq Hacker days, he is still in business [links open in new window]:
He does pro arrangements of (American) top 40 hits. He has thousands, and has retained his SQ80 format (at least as of a few years ago when we exchanged emails). For a pro gigging musician, buying these sequences would be a good solution.
Margus Kliimask has very generously developed a Window's based ESQ/SQ80 sequence converter, but I think it is 1-way only (I'm on a W3 phone and can't confirm):
Finally, Gary Giebler still sells his very-capable MS-DOS based 2-way sequencer translation tools! He even has a new storefront with new tools:
It's my guess that a contemporary computer will need an emulator to run them. I have used DosBox successfully for a ton of stuff:
I don't have the Giebler tools, though. Can someone confirm that they still work either with or without DosBox?