"Breed" is a song by the American rock band Nirvana, written by vocalist and guitarist Kurt Cobain. It is the fourth song on their second studio album, Nevermind, released in September 1991. Originally titled "Imodium" and featuring a slower tempo, "Breed" was one of two Nevermind songs, along with "Polly, dating back to 1989, when the band were still supporting their debut album, Bleach. It was never released as a single, but remained a regular part of the band's setlist until Cobain's suicide in April 1994. The Nevermind version of "Breed" appears in the 2007 American action film Shoot 'Em Up, directed by Michael Davis. It also appears in the video games Tony Hawk's Proving Ground and MotorStorm. Written by Cobain in 1989, "Breed" was originally titled "Imodium," after the anti-diarrhea medicine used by Tad Doyle, lead singer of Seattle rock band TAD, during Nirvana's and TAD's shared European tour.[3] It was first performed live on October 8, 1989, at the Lif Ticket Lounge in Omaha, Nebraska. "Breed" was first recorded in the studio in April 1990 by Butch Vig at Smart Studios in Madison, Wisconsin, during the recording sessions for what was intended to be the band's second album on Sub Pop, their original label. However, this planned album was cancelled after the departure of drummer Chad Channing, and the session was instead used as a demo tape, which led to the band signing with DGC Records in 1991.