Mixing the party rap sound of his hometown Atlanta with more of an indie attitude, Roscoe Dash came on the scene in 2009 with the club track “All the Way Turnt Up!” Dash was originally called ATL, a moniker he used when he became friendly with the local hip-hop crew Travis Porter. The group members asked if they could include Dash’s “All the Way Turnt Up!” on their I’m a Differenter 2 mixtape, but when the cut was credited to “Travis Porter featuring YT and ATL,” the relationship soured. He eventually went solo, re-recorded the cut with Soulja Boy Tell Em, and signed with the major label Interscope. His debut album, Ready Set Go!, arrived in 2010. ~ David Jeffries