Demos are seldom heard by the public, although some artists do eventually release rough demos in compilation albums or box sets, such as the album "Demolicious" by Green Day. Other demo versions have been unofficially released as bootleg recordings, such as The Beatles' bootleg demos and the Beach Boys' Sea of Tunes series. Several artists have eventually made official releases of demo versions of their songs as albums or companion pieces to albums, such as Florence and the Machine ("What the Water Gave Me", among others) and Cults on the EP "Sunday Jams". The event of a demo tape appearing on eBay has happened in the past, with the recordings being leaked onto the internet.