Richard David James (born 18 August 1971), best known under the pseudonym Aphex Twin, is an electronic musician and composer described as "the most inventive and influential figure in contemporary electronic music". He founded the record label Rephlex Records in 1991 with Grant Wilson-Claridge. Aphex Twin is also known under the aliases AFX, Blue Calx, Bradley Strider, Caustic Window, DJ Smojphace, GAK, Martin Tressider, Polygon Window, Power-Pill, Prichard D. Jams, Q-Chastic, Tahnaiya Russell, The Dice Man, Soit P.P., and The Tuss.The name Aphex is derived from Aphex Systems Limited, a brand of audio signal processing equipment. It is used with permission, as acknowledged on the back sleeves of Richard D. James Album and drukqs. He has explained in interviews that the Twin portion of his moniker is used in memory of his older brother, also named Richard James, who died at birth.