S-X has been played over 10 times on NTS, first on 4 April 2011. S-X's music has been featured on 16 episodes.

Sam Andrew Gumbley (born 4 August 1992), known professionally as S-X, is a British singer, songwriter, and record producer. As a producer, Gumbley has worked with many high-profile artists like Lil Wayne, Childish Gambino, Chance the Rapper, J. Cole, T.I., Meek Mill, Tyga, Nicki Minaj, Future and KSI, and he was Grammy-nominated for his work on Childish Gambino's album Because the Internet (2013). Gumbley gained mainstream popularity as a singer when he featured on KSI's 2019 single "Down Like That", alongside Rick Ross…