Replacing Steven Tyler in Aerosmith would be like replacing Mick Jagger in the Rolling Stones, nearly impossible. Joe Perry is saying the band considered replacing Tyler a decade ago when Tyler took on other opportunities like judging American Idol. The names floated for a replacement were Chris Cornell, Paul Rodgers, Billy Idol and Sammy Hagar. In my opinion, Steven is irreplaceable. The Band now holds the record for having their original line up in tact and for longer than any other band.