* "Scratch It Out/Bikini Twilight" (single, July 1989) (With The Go Team).
* The Winding Sheet (album, 1990) (Cobain does background vocals on "Down in the Dark" and guitar on "Where Did You Sleep Last Night") (With Mark Lanegan).
* Kurt Cobain & Mudhoney - The Money Will Roll Right In (California Live 1992)
* The "Priest" They Called Him, (EP, 1993) (Cobain does background guitar noise) (With William S. Burroughs).
* Houdini (album, 1993) (Cobain plays guitar on "Sky Pup" and percussion on the song "Spread Eagle Beagle") (With the Melvins).
* Live Through This (album 1994), Cobain does backing vocals for "Asking for It." (With Hole)
* Sunn Amps and Smashed Guitars (live album, 1995) (Cobain does guest vocals on the song "Divine and Bright") (With Earth).