He founded the record label IXXI Initiative in 2012, which fostered the career of fellow Toronto native Daniel Caesar.

In July 2013, Leon released his debut mixtape Ninelevenne, the Tragedy followed by his second project Narcissus, the Drowning of Ego on January 22, 2014.

[11] In 2021, God's Algorithm had a non-traditional album release, with no streaming service involved, and only available for purchase on a beta landing page where users interacted through visuals, audio files, NFTs, and apparel.

Leon also has released several WondaGurl-produced songs as well as working with fellow Toronto artists like River Tiber and Jazz Cartier.

While working on Daniel Caesar's Case Study 01 in Los Angeles, fellow collaborator River Tiber recommended sharing the demo with Ye at one of West's Sunday Service performances.