Boston performs during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
The Dropkick Murphys perform during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
James Taylor and Jimmy Buffett perform during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
Carole King and James Taylor at the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
Jason Aldean performs during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
Tom Scholz of Boston performs during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
Steven Tyler and Aerosmith perform during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
Boyz II Men perform with New Kids on the Block during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
Marathon bystander Bruce Mendhelson, first responder Alicia Shambo, Marathon victim Victoria McGrath, first responder Tyler Dodd, and Boston firefighter Jimmy Plourde on stage during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
New Kids on the Block perform during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
The J. Geils Band perform during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
Extreme performs during the Boston Strong Concert at TD Garden on May 30, 2013. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
Peter Wolf of J. Geils Band performs at the Boston Strong concert. (Photo by Paul Marotta/Getty Images)
Boston Strong Concert
All the performers gather on stage at the end of the evening's performance performs during the Boston Strong: An Evening Of Support And Celebration, including Jimmy Buffet, Doug Flutie, James Taylor, Steven Tyler, Donnie Wahlberg, Steven Tyler, J. Geils Band, New Kids on the Block, Boston and Extreme at TD Garden on May 30, 2013 in Boston, Massachusetts. (Photo by Paul Marotta/Getty Images)