by Moby for the 12-inch single; it was also featured on the limited edition version of the duo's 2003 compilation album PopArt: The Hits, in a remixed form. "DJ Culture" and "Was It Worth It?" were the two singles recorded for the Pet Shop Boys' 1991 compilation album, Discography: The Complete Singles Collection. "Music for Boys" was originally credited as "Music for Boys Part 2" and was the B-side to "DJ Culture". The original B-side version can also be found on the 1995 compilation album Alternative. This reissue was re-released in 2018 along with the Further Listening editions of Very and Bilingual. Another re-release followed on 9 February 2009, under the title of Behaviour: Remastered. This version contains only the 10 tracks on the original. Track listing Notes Track 12 on the Further Listening 1990–1991 bonus disc is incorrectly labelled as "Music for Boys" (ambient mix). Personnel Behaviour Credits adapted from the liner notes of Behaviour. Pet Shop Boys Neil Tennant Chris Lowe Additional musicians Dominic Clarke – additional programming ; plastic tube J.J. Belle – guitar Johnny Marr – rhythm guitar, feedback guitar ; guitar Angelo Badalamenti – orchestra arrangement and conducting Alexander Bălănescu – string quartet arrangement Balanescu Quartet – strings Jay Henry – additional vocals Technical Pet Shop Boys – production Harold Faltermeyer – production Brian Reeves – engineering Bob Kraushaar – engineering ; vocal recording Julian Mendelsohn – mixing Haydn Bendall – orchestra recording, strings recording Artwork Eric Watson – photography Mark Farrow – design Pet Shop Boys – design Further Listening 1990–1991 Credits adapted from the liner notes of Introspective/Further Listening 1990–1991. Pet Shop Boys Neil Tennant Chris Lowe Additional musicians Dominic Clarke – additional programming ; programming ; sequencing Gary Maughan – additional keyboards Juliet Roberts – additional vocals J.J. Belle – guitars Tessa Niles – additional vocals Harold Faltermeyer – orchestral arrangement Scott Davidson – programming Greg Bone – guitar Pete Gleadall – programming Andy Duncan – percussion Carol Kenyon – additional vocals Guida de Palma – additional vocals Technical Pet Shop Boys – production ; remix ; mixing ; compilation Pete Schwier – engineering ; mixing Harold Faltermeyer – production Brian Reeves – engineering Julian Mendelsohn – mixing ; production Bob Kraushaar – engineering Paul Wright – engineering David Jacob – remix ; mixing Ren Swan – engineering Steve Fitzmaurice – engineering assistance Mike Jarratt – orchestra recording Brothers in Rhythm –