Power Fantastic is the 20th and final track (second of two previously-unreleased tracks) on The B-Sides compilation (included as the third and final disc on The Hits / The B-Sides).
The song was based on a instrumental composition by Wendy & Lisa called Carousel, recorded by them in June 1985.
After Prince wrote lyrics for the song and came up with a vocal melody the track was re-recorded live on 19 March 1986 (the same day as And How) at Prince’s Galpin Blvd Home Studio in Chanhassen, Minnesota, during the the first session that yielded material for the Dream Factory album. Prince first recorded a rough vocal guiding the band through the song and later in the same session mixed an instrumental and a version where he re-recorded his vocal (this version was released on The Hits / The B-Sides).
The song was not included on the initial, late April configuration of the Dream Factory album, but was included on a configuration made on 3 June 1986, before being removed again for the July configuration. The instrumental intro to the song was removed when the track was placed on The Hits / The B-Sides in 1993.
The song was mentioned in an early draft (from October 1987) of Graffiti Bridge, but it is not known if the song was re-recorded however. In this version of the script, Power Fantastic was supposed to be sung by the character "Ruthie Washington", who Prince hoped would be played by Madonna. It was not included on any known configuration of the Graffiti Bridge album.
In September 2020, the initial take (labeled Power Fantastic (Live In Studio)) with Prince guide vocal and instructions, and preserving the original intro, was released as the tenth track of Vault Tracks part 1, one of the discs with previously unreleased tracks included with the Sign O’ The Times Super Deluxe Edition.