Callux is a British YouTuber who started his career in 2012 and has since garnered near 3.4 million subscribers and 500 million channel views (May 2020). He has collaborated various times in videos with other British YouTubers including members of the Sidemen, most notably KSI and W2S.

Cal first came into the music scene in 2016 with a song that took part in the “Roast Me Challenge” appropriately titled with the same name. Five months later he would appear again with a diss track against American YouTuber RiceGum, who uploaded a diss track targeted at Sidemen member Behzinga a week earlier. He would then have a cameo in Behz’s music video for his diss track against KSI and RiceGum in August 2017.

The next year in December, Cal and his ex-girlfriend Sarah Close would create a song together within 60 minutes called Long Winter Nights.

Nearly a year after his last song, Cal challenged himself to make a song in 24 hours, in which the Christmas song Naughty List was created. This is considered his first official release and the song debuted at #18 and stayed on the UK Songs chart for four days.