I think these two release groups are sufficiently related that they should be linked with a relationship. Is Relationship Type / Remix - MusicBrainz appropriate, or is the appropriate relationship type missing?
@yindesu , the “mix” isn’t different on the two albums is question. One has vocals and the other doesn’t. That’s all. They should be in different release groups since they are different. The instrumental version is not a “Remix”. It’s just an instrumental release.
Here are some examples. Original track first.
Now, the remix version…
There’s clearly a more significant difference between the two recordings. On the remix, vocals are totally different. The mix of the music is different. Additional artists appear. On the DL projects the only difference is that one does NOT have vocals. Does that make it a remix? I think not. It’s just instrumental…
@yindesu, it’s not the “karaoke version”. Not sure why you would even make that analogy! It’s just an instrumental version of the same album. Here’s another example. This is the original…