In these tracks, the vocal lines are not really performed by a vocalist in the traditional sense, or even in a real singing way. It is just a compilation of clips of their usual voices, cut from different places.
And how works should be added, especially lyricist? The one who made the remix can be used as an author of lyrics?
I think as long as the clips are real and not AI generated, using the person as a “vocalist” makes sense, personally? But yeah, clearly not a lyricist; that could be the remix maker if you’re sure they put it together (technically, a third person could have decided what the lyrics should be…)
I don’t really understand what was done to these recordings. They are remixes? With vocal samples put together? Are there originals with “real singing”?
I’m somewhat familiar with this sort of “remix” (in the general sense, not the MusicBrainz term), and I’d probably enter this as a vocal sample instead of a straight vocals relationship, since the “vocalist” had no direct involvement in the track
I have seen a few of these. Sampled speeches or words used. The covers\booklets of those credited as “vocals by”. Trying to use a “sample of” can be tricky as it needs you to know the original source material and does not actually name the person involved.