Sam Andrew Gumbley (born 4 August 1992), known professionally as S-X, is a British singer, songwriter and record producer.

As a record producer, Gumbley has worked with high-profile artists such as Chance the Rapper, Childish Gambino, Future, Lil Wayne, Meek Mill, and Nicki Minaj.

[1][2] Gumbley gained mainstream popularity as a singer-songwriter when he featured on (and produced) KSI's 2019 single "Down Like That", alongside Rick Ross and Lil Baby.

When he was in Year 7, Gumbley began playing the saxophone and harmonica and producing music in FL Studio.

[3] In 2018, Gumbley was the opening act for British singer-songwriter Lily Allen throughout the North American and European leg of her No Shame Tour.

[9][10] In February 2020, the song received a silver certification from the British Phonographic Industry (BPI) for exceeding sales of 200,000 units in the UK.

[21] Gumbley also starred alongside KSI as cast members of the second series of Channel 4's Celebrity Gogglebox.