Aerosmith

The fifth decade of Aerosmith's career got off to a rocky start, as singer Steve Tyler and guitarist Joe Perry feuded over everything from Tyler's physical ailments to his decision to become a judge on American Idol – without telling his bandmates first, of course. Some rock juggernauts are too big to fail, though, and the members of Aerosmith are apparently now at work on their first album of original material since 2001's Just Push Play. This will be the group's first visit to Japan in seven years, and somehow we doubt that local audiences will care much that their rock idols are starting to look a little doddery.