Derri Joseph Lewis (b.1997) is a prize-winning Welsh composer and sound-artist, writing music for concerts, stage-works and installations in Europe and America. His music has been performed by artists and ensembles including the BBC National Orchestra of Wales, Gould Piano Trio, bass-violist Liam Byrne, and the Ligeti Quartet. In 2020 Derri graduated from the Royal Welsh College of Music and Drama with first class honours, studying with Joseph Davies and Ceri Tippetts and receiving the Eifion Evans Memorial Prize and RWCMD Skills Award.