Patrick Gleeson is a musician, synthesizer pioneer, composer and producer, from California, USA. In 1968, Gleeson bought a Moog synthesizer and opened recording studio Different Fur. Gleeson worked with Herbie Hancock in the early 1970s, touring with Hancock, and appearing on the albums Crossings and Sextant. Sextant and Headhunters were both recorded in part at Different Fur studios. Gleeson has worked with many other Jazz musicians, including Lenny White, Freddie Hubbard, Charles Earland and Joe Henderson.