In October 2012, RL Grime released his first Halloween Mix, featuring original songs and remixes of popular tracks, along with vocal drops from celebrities. In June 2012, RL Grime teamed up with producer Salva for a remix of Kanye West's " Mercy", which has garnered over eight million plays on SoundCloud and was called by The Fader "just massive, as if hail and tsunami waves were both byproducts of bass." In December 2012, RL Grime remixed Benny Benassi's song " Satisfaction", which gained over one million SoundCloud streams and charted in the top five on the Beatport electro house chart.
In April 2012, he released his debut release on the WeDidIt label, the Grapes EP, featuring four original tracks and remixes from Shlohmo, Salva, and LOL Boys. In 2011, RL Grime joined the WeDidIt collective with fellow Los Angeles-born producers Shlohmo, Groundislava, and D33J. In 2012, Steinway moved back to Los Angeles and currently resides there. In 2010 after his first year, he transferred from Northeastern to New York University, majoring in music business. In 2009, he graduated from Windward and enrolled at Northeastern University in Boston, Massachusetts, with a focus in music business. There, he attended Windward School in Mar Vista.
Steinway grew up in Los Angeles, California.