Back in 1991 Ozzy Osbourne and Motorhead's Lemmy co-wrote a song called Hellraiser. Instead of one collaborating on the others album, they decided to both release a version of the song with their own band.
The song appeared on Ozzy's 1991 album No More Tears and Motorhead's 1992 album March or Die. Only the Motorhead version was released as a single in 1992 and also appears in the film Hellraiser III: Hell on earth.
Here are both versions of the song, both great in their own way
Ozzy - Hellraiser
Motorhead - Hellraiser