I think it's great stuff. If you haven't already, build a website for the band or album and leave it up as a static tribute. If it's not something that brings riches, maybe it's a contribution to the world.

And do what you can to do what AI music makers wouldn't think to do - differentiate with photos of yourselves, the process, the wilds, etc. You've done all the hard work writing and recording the music, so you might as well embellish its place in the world, and the places it's about.