[dancey]

First, why would they credit vocalists on an instrumental rearranged album (Theatrhythm)? RIKKI didn't compose suteki da ne.

Second, the only real info we can go by is what's in the books. No one besides the composer themselves are going to be able to tell you who composed and/or arranged something. So either it was wrong before and SQEX fixed it, or it's wrong now and was right before, or it could even be wrong both times (who knows)? We have the ability to talk directly to composers and SQEX folk with Twitter and modern social media but even then you're working off someone's memory. How many times have people researched old tracks credited to aliases, asked a composer via twitter and they said "I think that was me" or "Yeah, that sounds ilke me". That's no different than people identifying composers based on what the composition "sounds like". It will always be 100% unreliable.

Just go by what's in the book. Right or wrong, it's the only source of truth you have. Whether you want to believe it or not, that's up to you.

*edit* I stand corrected, there's vocals on this Theatrhythm album. Weird.

*edit edit* Admittedly, these are originally SQEX promot items from their points store anyway, weren't they? They probably just threw them together into a collection to get some extra money out of it.