Up front: we don't know the answer, either. But what we do know is that the Fenway Park folks have been warning their neighbors to expect a concert on Saturday, July 19 and Sunday, July 20, 2008. So let the speculation begin: think you know who's coming to Fenway? Tell us in the comments; results and excerpts will appear in the fishwrap next week.
In the meantime, here's our best guesses. Note: these aren't real odds, so don't blame us if the Madonna/McCartney "Aged Icons Tour" is announced tomorrow on the History Channel.
2. Led Zeppelin
4. Paul McCartney
7. Bon Jovi