A native of Los Angeles, California's Hollywood region, Matthew Musto aka Blackbear was known as a fledgling, rock-leaning singer/songwriter until he co-wrote Justin Bieber's "Boyfriend," a number two hit on the Billboard Hot 100 in 2012. Around the same time, he reinvented himself as a rapper and more R&B-oriented singer through the self-released Sex, on which he was joined by fellow "Boyfriend" co-writer Mike Posner, James Blake, and Maejor Ali. He also appeared on MGK's Lace Up. An EP, The Afterglow, followed in 2014. His more recent collaboration with Mike Posner, Mansionz, has also gained attention.
"Do Re Mi" shows off Blackbear's smooth rapping style over a head-bobbing beat.