Superphil
Dismember
Slight variation on the theme, let's have some songs written by bands or artists that are specifically about another band or artist. You might need to explain who the song is about if its not clear. I'll start you with:
Phil Lynott - Kings Call (Elvis)
Motorhead - R.A.M.O.N.E.S
Phil Lynott - Kings Call (Elvis)
Motorhead - R.A.M.O.N.E.S