Tapeworm is a defunct side project of Nine Inch Nails which existed, featuring various contributors, since the mid-1990s. No recordings were ever released, but the group was frequently referenced in interviews. After many years of rumors, Trent Reznor announced the end of the project in 2004.
After The Downward Spiral tours in 1996, Danny Lohner and Charlie Clouser approached Trent with music ideas that Trent felt did not fit in with his vision of the band, but instead agreed to collaborate and work on the material as a side project, with each member having equal say in decisions. The band eventually became a supergroup of sorts including, among others, Maynard James Keenan (Tool, A Perfect Circle), Page Hamilton (Helmet), and Phil Anselmo.
By 2001, producer Alan Moulder had tracked "more than an album's worth" of demos, according to Reznor's post on the site, adding that the rough songs are "very unlike The Fragile, and may not even be released as NIN material,". However after 2002, Clouser left NIN and was no longer a part of Tapeworm. The group (at the time consisting of Reznor, Lohner, Keenan and Atticus Ross) booked time in a recording studio in an attempt to produce an album. An official Tapeworm website (Tapeworm.net, now offline) was created and showed pictures from various recording sessions.
In September 2003, Lohner told Kerrang! magazine that the album was "ready to mix" but had been held up by legal issues stemming from conflicts between Reznor and Keenan's record labels.
Over time, the band began to break down, partly due to label issues and partly due to Trent's lack of interest in the project and announced the band was dead in 2004.
In 1999 Lohner reported that three tracks had been completed, and described the various materials featuring Anselmo as "heavy NIN-meets-Pantera" and "mellow Pink Floyd The Wall-type songs."
Musicians cited to have recorded material for Tapeworm:
- Phil Anselmo (Pantera / Down / Superjoint Ritual)
- Charlie Clouser (Nine Inch Nails)
- Josh Freese (A Perfect Circle / The Vandals / Nine Inch Nails / Guns N' Roses / Black Light Burns)
- Toni Halliday (Curve)
- Page Hamilton (Helmet)
- Maynard James Keenan (Tool / A Perfect Circle / Puscifer)
- Danny Lohner (Nine Inch Nails / A Perfect Circle / Black Light Burns)
- Alan Moulder (producer, Nine Inch Nails / Smashing Pumpkins)
- Trent Reznor (Nine Inch Nails)
- Atticus Ross (12 Rounds]] / Error)
- Tommy Victor (Prong / Danzig)
- Trent Reznor owned Nothing Studios in New Orleans, Lousiana. Anselmo had recorded all the vocals for The Great Southern Trendkill there.