Sleepify

Sleepify is an album by the American funk band Vulfpeck, released March 2014. The release consists solely of ten roughly 30-second-long tracks of silence. The album was made available on the music streaming service Spotify, where the band encouraged consumers to play the album on a loop while they slept. In turn, royalties from the playing of each track on the "album" were to be used to crowdfund a free concert tour by the band.