Can’t seem to find any guides on cover versions… a search of the docs for “cover” ends up mainly pulling in cover art stuff. Basic issue: if an artist writes/co-writes a song for one band, then plays it later for a different band/solo - is it a cover version?
I’ve been adding some albums by “Peter Hook & The Light” - who are, for the uninitiated, a vehicle for the ex-Joy Division and New Order bassist to play the songs he co-wrote when in those bands. Setting them as cover versions seems slightly odd to me, as he’s playing songs he wrote. In comparison, Paul McCartney has several Beatles tracks on his live albums, and they aren’t flagged as covers.
Another to ponder are the songs Lemmy wrote in Hawkwind, Motörhead and Lost Johnny. Both were later recorded by Motörhead (the band). And Lost Johnny was also recorded by co-writer Mick Farren with his band The Deviants. Currently, they’re sometimes flagged as covers and sometimes not.