We know Robert Plant isn't interested in fronting a reconstituted Led Zeppelin, and we know Heart singer Ann Wilson is more than up to the task of performing Zeppelin's greatest hits.
The bassist and lyricist, who contributed heavily to a number of Osbourne's solo records, has gone public with his anger over the way he and his fellow former band members.
Every self-respecting Bon Jovi fan knows all about steel horses and the story of Tommy and Gina, but the history of New Jersey's most impressively coiffed rockers contains a lot more than that.