Along with his band Maroon 5, singer, songwriter, guitarist, producer, and actor Adam Levine became a global superstar, issuing a string of platinum-certified albums and number one singles centered around his distinctive tenor croon and occasional falsetto. In addition to the group's multi-platinum 2002 debut Songs About Jane and chart-topping sets such as 2007's It Won't Be Soon Before Long and 2014's V, Levine also made a mark as a solo vocalist, starting most notably with Kanye West on the rapper's 2005 single "Heard 'Em Say." He went on to secure hits with Gym Class Heroes...