Cantwell was encouraged by friends to upload videos of his performances to Facebook, and in 2013, with the help of manager Blair Dreelan, ex-lead singer of the boyband East 17, he was soon performing live and quickly signed with Universal Music. HRVY’s first single, “Thank You”, was released in late 2013.
In May 2014, HRVY was a support artist for Little Mix during the Salute Tour, alongside M.O.
Among promotional tours, appearances, single releases and other pop star activities, Cantwell appeared occasionally as a guest presenter on BBC television show Friday Download, then as a full-time host in 2016.
In 2017, he released his two EPs, Holiday EP and Talk To Ya EP, which included the singles “Phobia” and “Personal” amongst other tracks. The album failed to break into the top 50 in the UK.
On April 25, 2018, HRVY delivered his single, “Hasta Luego”, featuring Cuban-American singer, Malu Trevejo. Within a week, the song gained over 7 million views on YouTube. In June 2018, DJ Jonas Blue invited him onstage to perform the vocals of one of his hit singles ‘Mama’ at Capital’s Summer Time Ball.