We previously learned that Radiohead frontman Thom Yorke, who is currently mixing a new record with the band in studio, has curated a soundtrack for his friend (and Radiohead's regular visual collaborator) Stanley Donwood's new art installation in Sydney, Australia. Now, sources have revealed that the soundtrack has a runtime of a whopping 18 days.

Do you know how long it takes to create 18 consecutive days of music, with each and every second unique to the others? At least 432 hours, which when broken down is 1,555,200 seconds. Yorke has titled the music portion of the exhibit Subterrane, the exhibit itself being dubbed The Panic Office by Donwood. The installation was revealed on May 21 and is currently on display in Sydney through June 6.

Although the soundtrack will not be released to the general public at the close of the exhibit, Australia's popular radio station Triple J checked it out and recounted the experience as “an eerie mix of ambient textures, experimental sounds, and field recordings” comparable to Yorke's latest solo effort Tomorrow's Modern Boxes. You can listen to a very brief snippet of the soundtrack via the exhibit's preview video here. You can also crab the multitalented artist's solo effort, which was released via BitTorrent, at this location.

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