. OBSESSION

written by MICHAEL DES BARRES / HOLLY KNIGHT

- ANIMOTION (1984)

- SAMANTHA COLE (2005)

- YOUNG PARISIANS (2007)

. OH L'AMOUR

written by ANDY BELL / VINCE CLARKE

- ERASURE (1986)

- DOLLAR (o l'amour) (1987)

- YAMBOO (2005)

. ON THE BEAT

written by MAURO MALAVASI / PAUL SLADE

- B.B. & Q. BAND (1981)

- SEDUCED (on da beat) (2004)

. OOPS UPSIDE YOUR HEAD

written by LONNIE SIMMONS / CHARLES WILSON / RUDOLPH TAYLOR / RONNIE WILSON / ROBERT WILSON

- GAP BAND (1979)

- SNAP (ooops up) (1990)

- SNOOP DOGGY DOGG (snoop's upside ya head) (1996)

- D.J. CASPER (2004)

. OPA OPA

written by GIORGOS ALKAIOS

- NOTIS SFAKIANAKIS (1994)

- ANTIQUE (1999)

- NOTIS (2001)

- DESPINA VANDI (2004)

. OPEN ARMS

written by JONATHAN CAIN / STEVE PERRY

- JOURNEY (1982)

- MARIAH CAREY (1996)

. L'ORANGE

written by GILBERT BECAUD / PIERRE DELANOE

- GILBERT BECAUD (1964)

- STAR ACADEMY 3 (2003)

. OUR HOUSE

written by CHRIS FOREMAN / CARL SMYTH

- MADNESS (1982)

- C.C. & MANEVAL (les mécanos) (1983)

- BIG BROTHERS (unser haus) (2004)

. OUT OF TOUCH

written by DARYL HALL / JOHN OATES

- DARYL HALL & JOHN OATES (1984)

- DAVE ARMSTRONG feat. INGRID HAKANSON (out of time) (2004)

- UNITING NATION (2004)

- LLP (2005)

. OWNER OF THE LONELY HEART

written by TREVOR RABIN / JON ANDERSON / CHRIS SQUIRE / TREVOR HORN

- YES (1983)

- LOCAL BOYS (1984)

- 2 RUFF (1998)

- MAX GRAHAM vs. YES (2005)