I’ve recently acquired a single disc release called “Chrono Trigger Orchestral Arrangement”. There’s no indication it’s part of a box set; it was sold as a standalone item.
While searching for the disc on MusicBrainz I came across Chrono Orchestral Arrangement, a three disc box set with a close, but different name. I had never heard of the box set before, but when looking at its details there are three discs, each with a name. The disc I have matches the name of the first disc in that box set. Unfortunately, the disc IDs aren’t available in the box set entry so I can’t tell if they’re the exact same disc. The catalog numbers, however, are different. The box set lists SQEX-10727, SQEX-10728, SQEX-10729, while the standalone release I have is SQEX-10724.
I think the history is that the box set was a limited edition release of two separate soundtracks, “Chrono Trigger Orchestral Arrangement” and “Chrono Cross Orchestral Arrangement”, with a bonus box set-only disc in it. Discs 1 & 2 are now sold separately as standalone works.
How should I handle this? On the one hand, my disc seems quite related to the box set. On the other, it’s a complete, standalone release with a different name. I’ve search the forum and the only similar case I found was related to how a historical artifact of how MusicBrainz used to track discs.