[1][2] Limb collects out-of-print and previously unreleased instrumental tracks from the early days of Foetus (Thirlwell's instrumental tracks would later be released under the names Steroid Maximus and Manorexia).

Limb is packaged with a DVD featuring Clément Tuffreau's NYC Foetus documentary about Thirlwell's life in New York City, along with several live performances of Thirlwell's ensembles and commissioned music.

[3] Many of the pieces on Limb are influenced by minimalist composers, with Thirlwell citing John Cage, Steve Reich (particularly his phasing technique) and Terry Riley in the liner notes.

[4] A 20-minute phase piece titled "You Have to Obey", comprising a looped Vincent Price sample, is included as a bonus track in audio MP3.

"[4] The pieces are in the styles of individual artists including Joan Miró, Bridget Riley and Wassily Kandinsky and art movements like Constructivism.