Aerosmith's Steven Tyler, left, and Joe Perry perform a free concert Monday, Nov. 5, 2012 in Boston's Allston neighborhood as fans watch from the apartment building which was their home in the early ... more 

Aerosmith's Steven Tyler, left, and Joe Perry perform a free concert Monday, Nov. 5, 2012 in Boston's Allston neighborhood as fans watch from the apartment building which was their home in the early 1970's. (AP Photo/Elise Amendola) less