Copyright Permission for Selling Draco and Maria?

[The Arcane Composer]

Hi all,

I’m posting here because someone online elsewhere suggested that this might be the right place to ask. Apologies if this is in the wrong subform.

I’m currently nearly finished a VST orchestration/realisation/extension of the opera from Final Fantasy 6. I was partially inspired by Kelli Butler, Joshua Blue, and Patrick McNally’s charity performance from a couple of years ago—I wanted to make an orchestral version that people could sing over if they wanted (as well as a version with some of my own singer friends singing the parts).

It was a pretty large-scale undertaking, and I’d love to sell the result on Bandcamp, but I have absolutely no idea how to go about acquiring licensing or permission to sell.

Since it’s about 15 minutes long, I was thinking of selling the separate sections as separate tracks, but I don’t know if there’s any guidelines around that. I think that most releases of the music, apart from the original soundtrack version, have been as a single track.

Does anyone here have any experience dealing with this kind of thing, or know where I could look?

Thanks.