"Cosmogony" is a song by Icelandic artist Björk, released as the second single from her seventh album Biophilia. The song was released on iTunes on July 19, 2011. It was also released as an app, which served as the "mother app" for the Biophilia app. It was released as part of The Crystalline Series alongside the first single from the album "Crystalline" on CD and vinyl.

In January 2011, when the app Solar System by Touch Press was released, it was accompanied by an instrumental introduction written by Björk. This song was the instrumental version of "Cosmogony". In March 2011^[1] it was announced that Björk would play at the Manchester International Festival with a new concept of concert. Several songs from the album debuted during a series of performances at the festival between June 27 and July 16, 2011. Björk called the performances a "meditation on the relationship between music, nature and technology"."Special" instruments were designed and constructed specifically for these concerts.

"Cosmogony" is a calm and warm song, marking the link between the previous Björk project, Volta and Biophilia, using distorted brass, but in a much more intimate soft way. It has a time signature 4/4, and runs at a slow tempo of 60 beats per minute. The lyrics to "Cosmogony" are also far from the rest of the songs on the album, while those are focused on technic or metaphoric facts about a natural phenomenon, the "Cosmogony" lyrics turn into a philosophic view, based on several myths about the creation of the universe. Björk explained:

This song is the "music of the spheres" song for me... So it's all about copper and rotating things and harmony and equilibrium and the universe and where there’ s a place for every little thing and we're all taken care of.

Björk also considers the song as some kind of joke, branding the Big Bang theory as a 20th-century creation myth:

I guess after watching documentaries about string theory, [the song] was sort of a personal joke [...] Big Bang [is] 20th Century and string theory [is] so 21st Century [...] I guess all creation myths at the time of their making were science. I’ll bet the pharaohs thought pyramids and mummies were the future – that was pretty science fiction. 3000 years later it is just mythology and the creation myth. In this song you have 4 verses. The first verse is the American native creation myth, next verse is Sanskrit creation myth, the 3rd verse is Aboriginal creation myth and the 4th verse is Big Bang theory.^[2]

• Album version – 5:01
• Serban Ghenea Mix – 4:51
• Matthew Herbert Mix 1 – 5:04
• Matthew Herbert Mix 2 – 4:17
• Matthew Herbert Instrumental 1 – 5:05
• Matthew Herbert Instrumental 2 – 4:15
• El Guincho Remix – 6:21 released on Part 3 of the Biophilia Remix Series
• MIF live version – 5:24 (Biophilia: Manual Edition CD2)
• Brass Instrumental version – 2:58 (released in early 2011 to accompany the Solar System App)