McArthur grew up in Toronto, Ontario, Canada and received a formal training in piano.[2] After leaving high school, he spent a year studying Western civilizations at university but dropped out and enrolled in the music program at Humber College instead.[2] During his studies he collaborated with the local hip-hop producer Boi-1da, contributing to the song "Uptown" that featured on the So Far Gone EP by Drake.[2][6] McArthur left education to pursue his interest in music, combining his classical training with an interest in hip-hop and rap. In Toronto he worked with JD Era, Son Real, and Rich Kidd.[7][8][9]
In 2012 McArthur co-wrote and produced a number of interludes and the song "Kings & Queens" on Careless World: Rise Of The Last King by Tyga,[10] while in the same year he contributed to the song "Rasberries" on Vicious Lies And Dangerous Rumors by Big Boi.[11] He produced the comedy rap troupe The Lonely Island in 2013 and produced/co-wrote the song "This Is Love" on the Kelly Rowland album Talk a Good Game.[2] The album charted in the top 10 of the Billboard 200.[12] A year earlier, McArthur had also produced the Rick Ross track "Mind Games" that feature Rowland.[13][14] In 2013 he also produced the track "Wide Open" for the B.o.B. album Underground Luxury,[15] continuing the collaboration on the song "Confucious" featured on Psycadelik Thoughtz released in 2015.[16]
McArthur worked with a number of acts contracted under the rapper and producer DJ Khaled, including Ace Hood.[17] In 2013, he produced the song "Helen Keller" on Khaled's album Suffering from Success.