The first time Manson contributed her vocals to a project separately from any of her bands was in 1998, when she performed vocals for the chorus of a Garbage-produced remix of Fun Lovin' Criminals 1999 single "Korean Bodega". Due to litigation problems surrounding Manson's contractual obligation to Radioactive Records, further collaborations with both Fun Lovin' Criminals and Moby were unable to proceed. Manson teamed up with Marilyn Manson and Tim Sköld in 2004 to record a cover version of the Human League's "Don't You Want Me" but both felt the track inappropriate for either acts upcoming albums, and remains unreleased. Later that year, Manson and Brody Dalle contributed backing vocals to a Queens of the Stone Age track. In 2006, Manson planned to record a John Lennon cover version for the Amnesty International Instant Karma charity compilation with bassist Eric Avery, however a scheduling misunderstanding left them short of time and unable to record the song. Manson and Avery eventually co-wrote and recorded "Maybe", a ballad duet for Avery's album Help Wanted. The following year, Manson worked with long-time friend Chris Connelly, orating part of a long poem on his eighth album Forgiveness and Exile, and worked on a duet with longtime inspiration Debbie Harry which remains uncompleted. Upon her taking on the role of Catherine Weaver in Terminator... and on the encouragement of series' composer Bear McCreary, Manson was asked by showrunner Josh Friedman to perform and co-create a gospel arrangement of "Samson and Delilah" for the opening episode of the second season. After much interest, the track was released on Terminator: The Sarah Connor Chronicles season one soundtrack at the end of 2008. Three years later Manson recorded vocals to a track composed by Serj Tankian and Steven Sater. The track, "The Hunger", which Sater describes as exploring "the hunger of the heart", features on their rock musical adaptation of Prometheus Bound, and was recreated with fresh instrumentation and new lyrics for the digital release, exclusively through iTunes worldwide. All proceeds made from sales of the single will benefit Amnesty International. Manson has also given two tracks to Sky Ferreira; the 2012 single "Red Lips" and "I'm on Top" in 2013.