Lee has noted disliking lessons as a child, though she appreciates the structural foundation it created for her approach to composing and producing.

[14] While studying, she first began producing music, using the Fruity Loops Studio digital audio workstation (DAW).

She participated in beat cyphers and battles at Leimert Park's Project Blowed and Low End Theory.

[26] Lee was profiled in the 2020 documentary film Underplayed, in which she elaborated on the issue of diversity in the electronic dance music industry.

In an interview with Tonya Mosley, Lee said that "I can't take it back 'cause this has been my name now for many years," but also suggested that the juxtaposition of "tokki" as something cute and "monsta" as something scary "shows very much in the music that I make.

Once these were regained to a degree, Lee eventually began work on her 2017 album Lune Rouge, despite not being able to fully understand music while recovering.

[34] She discusses surmounting these challenges in Vox's Netflix series, Explained (season 1, episode titled "Music")[35] and the Great Big Story miniseries Soundwave.