Born in 1964, Jack Endino is a music producer based in Seattle, USA. Long associated with Seattle label Sub Pop and the grunge movement, Endino worked on seminal albums from bands such as Mudhoney and Soundgarden, but is probably best known for producing the first Nirvana album, Bleach, released in 1989. He also the singer for the semial early grunge band Skin Yard, who was active from 1983 to 1993 and had also been doing solo stuff since then.