"Fade into Darkness" is a song by Swedish house producer and disc jockey, DJ Avicii. It features uncredited vocals from Andreas Moe. The single was released on 16 July 2011. The song incorporates elements from "Perpetuum Mobile" by Penguin Cafe Orchestra, as written by Simon Jeffes. Prior to its release, the song was referred to as "Penguin," which was solely an instrumental track, unlike the following lyrical version.