"Vocal" was written during the writing process for the 2012 album Elysium, and was one of the earliest tracks written for the album. The track, however, wasn't included on the record for it didn't fit the rest of the "somber" and "reflective" material. It was instead recorded for Electric and was released as the album's second single.
The music video was directed by Joost Vandebrug. It is a tribute to rave culture and electronic music. It consists of a compilation of various amateur videos recorded circa the Summer of Rave in 1989.
Because the song is over six minutes long and the single edit never made available for purchase, it was ineligible to chart in most singles charts around the world, and only and few charts have ever included it, despite the single selling well.