Disco 4

Disco 4 (also known as Disco Four: Remixed by Pet Shop Boys) is the fourth remix album by English synth-pop duo Pet Shop Boys, released on 8 October 2007 by Parlophone on CD and vinyl. It was not made available as a digital download, due to licensing difficulties for each track.

The album is mainly a compilation of Pet Shop Boys remixes of songs by other artists, a first among any of their releases to date. It also includes a previously unreleased mix of "Integral" and the maxi-mix of "I'm with Stupid", previously released on the Japanese edition of Fundamental.

Since the album consists mostly of songs by other artists, it was ineligible for the UK Albums Chart. Instead, the album reached number 15 on the UK Compilation Chart and number three on the UK Dance Albums Chart.

To promote Disco Four, the PSB Perfect Immaculate mix of "Integral" had a limited service to club and selected radio DJs with a music video released on the duo's official website and YouTube.

Personnel
Credits adapted from the liner notes of Disco 4.

Pet Shop Boys

 * Neil Tennant – additional vocals (tracks 1, 5)
 * Chris Lowe – additional vocals (track 1)

Additional musicians

 * Pete Gleadall – programming (all tracks); additional vocals (track 3)
 * Tom Stephan – additional vocals (track 3)
 * Miguel Mateo-Garcia – additional vocals (track 3)
 * Sam Taylor-Wood – additional vocals (track 3)

Technical

 * Pet Shop Boys – remix production (track 1); production (track 2); remix, additional production (tracks 3–8)
 * Pete Gleadall – remix engineering (track 1); mix engineering (tracks 3, 8); engineering (track 6)
 * David Bowie – original production (track 2)
 * Brian Eno – original production (track 2)
 * Bob Kraushaar – mix engineering (tracks 2, 4); remix engineering (track 7)
 * Trevor Horn – original production (tracks 3, 8)
 * Goetz Botzenhardt – mix engineering (track 5)

Artwork

 * Mark Farrow – design, art direction
 * Pet Shop Boys – design, art direction
 * John Ross – photography