Thomas Russell Jenkinson, known professionally as Squarepusher, is an English electronic musician, record producer, bassist, multi-instrumentalist and DJ. His music spans several genres including drum and bass, IDM, acid techno, jazz fusion, and electroacoustic music. His recordings are often typified by a combination of complex drum programming, live instrumental playing, and digital signal processing. Since 1995, he has recorded for Warp Records as well as smaller labels, including Rephlex Records. He is the older brother of Ceephax Acid Crew (Andy Jenkinson).