Nine Inch Nails contains only one official member, Trent Reznor, though it features a number of other musicians in when on tour. Already popular after a stint on the first Lollapalooza tour in 1991, Nine Inch Nails and Trent Reznor became a huge commercial and critical success with 1994's multi-platinum album "The Downward Spiral" and helped make industrial music popular during the 90s. In 1999, Nine Inch Nails released the double album, "The Fragile", to great critical acclaim, but less than stellar sales. After touring to support "The Fragile" and releasing a "live" DVD and audio disc called "And All That Could Have Been" in 2001, Reznor took a lengthy break to deal with personal issues. He re-emerged in 2005 with Nine Inch Nails newest release, With_Teeth. In addition to his work as/with Nine Inch Nails, Trent Reznor produced Marilyn Manson's second album, "Antichrist Superstar," and produced soundtrack albums for the films Lost Highway and Natural Born Killers.