7": UK 1988 London NANA18
1. 7" Version 3:19
2. Once In A Lifetime 4.05

7": Australia 1988 Polygram 886-400-1
1. 7" Version 3:19
2. Once In A Lifetime 4.05

7": Netherlands 1988 London 886-400-7
1. 7" Version 3:19
2. Once In A Lifetime 4.05


7": UK 1988 London NANB18 (boxed set w/ poster & badges)
1. 7" Version 3:19
2. Once In A Lifetime 4.05


7": Japan 1988 London S05P-1110 (promo same sleeve)
1. 7" Version 3:19
2. Once In A Lifetime 4.05


7": USA 1988 Polygram 886-400-7
1. 7" Version 3:19
2. Once In A Lifetime 4.05

12": UK 1988 London NANX18
1. Extended 12" Version 5.11
2. Instrumental Dub Version 3.18
3. Once In A Lifetime 4.05

12": Australia 1988 Polygram 886-401-1
1. Extended 12" Version 5.11
2. Instrumental Dub Version 3.18
3. Once In A Lifetime 4.05

12": Germany 1988 Metronome 886-401-1
1. Extended 12" Version 5.11
2. Instrumental Dub Version 3.18
3. Once In A Lifetime 4.05


12": USA 1988 Polygram 886-481-1
1. Psycho 12" Version 6.27 (P. Hammond)
2. Instrumental Dub Version 3.18
3. Bass Tone Mix 5.33 (F. Bastone)
4. Once In A Lifetime 4.05


12": UK 1988 London NANXR18 (REMIX)
1. Psycho 12" Version 6.27
2. I Want You Back (Extended European Mix) 7:55
3. Once In a Lifetime 4.05


12": UK 1988 London NANXDJ18 (promo)
1. Extended 12" Version 5.11
2. Instrumental Dub Version 3.18
3. Once In A Lifetime 4.05

5" CD Single: UK 1988 London NANCD18 (picture disc)
1. Extended 12" Version 5.11
2. Venus (Extended Version) 7.23
3. Once In A Lifetime 4.05



3" CD Single: Japan 1988 Polydor P13L-37008
1. Extended 12" Version 5.11
2. Venus (Extended Version) 7.23
3. Once In A Lifetime 4.05


3" CD Single: JP 1988 Polydor P10L-4000-6
1. 7" Version 3:19
2. Once In A Lifetime 4.05


5" CD Single: JP 1988 Polydor PL13P7151
1. Extended 12" Version 5.11
2. Instrumental Dub Version 3.18
3. Once In A Lifetime4.05


3" CD Single: Japan 1988 Polydor P13L-37010
1. Psycho 12" Version 6.27
2. I Want You Back (Extended European Mix) 7:55
3. Once In a Lifetime 4.05



5" CD USA PolyGram CDP46 1988
1. 7" Version 3:18
2. Psycho Mix 6:27 (alternative ending)

CASS: USA 1988 Polygram 886-400-4
1. 7" Version 3:19
2. Once In A Lifetime 4.05

VHS Video: UK 1988 Vanderquest (Promo)
1. Nathan Jones