Which rock group released a cover song off of a pop singers 1987 debut solo album?
Home Sweet Home/Bittersweet Symphony:  It is, along with the songs "Why" and "Lean On Me", the only new content on the "Greatest Hitz" compilation, and is the third cover song Limp Bizkit has released on an album (the others being The Who's "Behind Blue Eyes", and George Michael's "Faith"). Faith (George Michael song): "Faith" is a song written and performed by George Michael, from his 1987 debut solo album of the same name.
Limp Bizkit