Onfroy uploaded his first song as XXXTentacion to his SoundCloud account in 2014 called "Vice City". Over time, he would continue to upload small snippets of songs that would either soon release or remain unreleased. Onfroy also released 2 collaboration albums with fellow American rapper Ski Mask the Slump God, called Members Only Vol. 1 and Members Only Vol. 2, in 2015 respectively. In 2016, he released the EP Willy Wonka Was a Child Murderer, with music heavily inspired by heavy metal and indie music. Onfroy's most popular song to date is "Look at Me", which was originally released in 2016 and re-released in 2017, and peaked at number 34 on US Billboard Hot 100 and the Top 40 of the Canadian Hot 100. The single helped him gain more popularity in early 2017 due to accusations of Canadian rapper Drake using a similar rap flow in his then unreleased song, now released under the name "KMT", that he previewed at a concert in Amsterdam featuring British rapper Giggs. Onfroy is currently working on his studio albums, Bad Vibes and 17, as well as his mixtapes I Need Jesus and Revenge and his collaborative album Members Only Vol. 3 with Members Only.