I've been doing a lot of work on Japanese video game soundtracks, and I think it would make sense to replace the Soundtrack disambiguation guidelines with something more robust and easier to edit

basically, instead of relying on just the disambiguation for info on what soundtrack a piece is from, we use the actual data already there instead (provided it's entered correctly, of course). we just use the "part of" relationship to display the right title, and it can even be localized based on language, just like the alias display we've already got

made some quick mockups of how this might look using Kongo Jungle from Super Smash Bros., on English MusicBrainz and Japanese MusicBrainz (using the respective language's title), as well as with a disambiguation, using the opening theme.