[syrrim]

They could pull it from wikidata pretty easily. This would cover all major bands and many more minor ones.

[saurik]

Oh, maybe for like, really organized groups. But even those change over time. Most of the musicians I know just work with random one-off hires when they get around to recording a track.

[swivelmaster]

That's not a member of the band, that's a session musician. Not the same thing.