He has two younger sisters and is the fourth generation of JC Stewarts, with his family running a grocery business of the same name.

[9] Stewart co-wrote the track "Hollywood" which featured on Lewis Capaldi's 2019 debut album Divinely Uninspired to a Hellish Extent.

[18][19] He uploaded a parody of the Friends theme song, "I'll Be There for You", to TikTok which caught the attention of Jennifer Aniston and subsequently led to his first appearances on U.S.

[20] His collaboration on a track with 220 Kid, "Too Many Nights", which peaked at number 72 on the UK Singles Chart.

[22] In January 2021, Stewart released his single "Break My Heart", which was co-written with Niall Horan and Plested.