There is a weird phenomenon that when CDs became a thing there were still discrepancies between US and UK releases of albums. Maybe due to rights, or due to the fact that when CDs were being pressed neither side cared to correct issues.
Take for instance Fireball by Deep Purple. I would argue that the best song on the album did not make it over here in the West. Allegedly because it wasn't ready in time for release. So it was replaced by Strange Kind of Woman, which was a standalone single. I'm not sure the exact release in the UK or EU, but if it didn't come out before the US there it came close. This isn't a quality concern as if it was then both Strange Kind of Woman and Demon's Eye would have been on both releases, probably in place of Anyones Daughter. However when it was pressed on CD, the tracklist corresponded to the region, with the UK 25th anniversary coming with bonus tracks like Strange Kind of Woman. Meanwhile in the US Demon's Eye is still omitted from the regular CD release when it shouldn't.
Keep in mind CDs can hold quite a bit more music than Vinyl. I want to say the longest single disc Vinyl I saw was maybe 50 minutes but usually 40 to 45 minutes was for the longer records. A lot of them were only in the 30s.
One absolutely bizarre case was the release of Dirty Deeds Done Dirt Cheap. This was not released in the US until many years after the fact. It was actually released after Back in Black so Big Balls and the title track became hits after AC/DC exploded so some people thought they got a new singer (RIP Bon Scott). I bring it up here because the original Australian release featured the song Jailbreak. But for some reason it was left off of the international release, instead it got its own EP in the mid 80s. As a Bon Scott fan its kind of neat that outside of Australia AC/DC would continue to release singles alongside the Brian Johnson one through the 80s. But if you were a completionist, or just wanted all the songs that correspond to an album. You'd be in a weird spot.
This practice was even worse in the 60s. Just compare Are You Experienced UK verses US. I'd argue that the US version there was the better record, however the core album was the UK one as numerous tracks were replaced with prior singles on the US release. Very confusing.
