Claim: Steven Tyler is only the back-up singer of Aerosmith.
Evidence: Steven Tyler -LRB- born Steven Victor Tallarico ; March 26 , 1948 -RRB- is an American singer-songwriter , multi-instrumentalist , and former television music competition judge , best known as the lead singer of the Boston-based rock band Aerosmith , in which he also plays the harmonica , and occasional piano and percussion.