Cocoon (Björk song)

"Cocoon" is a song by Icelandic singer Björk for her fourth studio album, Vespertine (2001). Written and produced by Björk and Thomas Knak, it was released as the album's third single on 11 March 2002 by One Little Indian Records. Inspired by her relationship with artist Matthew Barney, Björk wanted to create a record with a domestic mood. Working with Knak, she wrote "Cocoon", a song which is lyrically about a woman who describes making love with her lover during their post-coital hibernation, and includes frank sexual narrative related both explicitly and through over-sharing and metaphor.

Music critics received "Cocoon" with positive reviews, calling it one of the album's highlights. The song experienced moderate commercial success on record charts in the United Kingdom, Australia, and France but reached the top ten in Spain. The accompanying music video for "Cocoon" was directed by Eiko Ishioka and was filmed in New York City. It premiered at the Raindance Film Festival in October 2001, and was made available online through the singer's official website in February 2002, closer to the song's release as a single. It depicts Björk as a geisha whose makeup extends over her entire bleached nude body. The video was considered inappropriate and was banned from primetime MTV, following her music video for "Pagan Poetry". Björk promoted the song by performing it on the Vespertine world tour and several television and radio shows.