DeCarlo was born in Utica, New York, and became a fan of Boston as a teenager. He began recording covers of their songs and posting them on his MySpace with him on vocals. In March 2007, Boston lead singer Brad Delp committed suicide at the age of 55. As a tribute to Delp, DeCarlo wrote a song and posted it on his Myspace page. Another Boston fan heard DeCarlo's work and suggested that he send his Myspace page link to a Boston associate. DeCarlo sent the link, and was approached by Boston leader Tom Scholz to be one of the singers at the Brad Delp Tribute Concert in the Bank Of America Pavilion in Boston, MA. He was later hired as a permanent member.