- Objection (Tango) - Shakira
- Ob-La-Di, Ob-La-Da - The Beatles
- Obsesión - Aventura
- Ocean Avenue - Yellowcard
- Ode To My Family - The Cranberries
- Off The Ground - Paul McCartney
- Oh! - Micky Green
- Oh Happy Day - St Francis Choir
- Oh, I Love You So - Preston Smith
- Oh L'Amour - Erasure
- O Holy Night - Céline Dion
- Oh What A Night - The Dells
- Old Pop In An Oak - Rednex
- Old Time Rock 'N' Roll - Bob Seger
- On My Shoulders - The Do
- On Bended Knee - Boyz II Men
- On Broadway - The Drifters
- Once In A Lifetime - Talking Heads
- One - Swedish House Mafia
- One - Metallica
- One Desire - Jakarta
- One Less Lonely Girl - Justin Bieber
- One of God's Better People - Robbie Wi…
- One - U2
- One Caress - Depeche Mode
- One Day In Your Life - Anastacia
- One Fine Day - The Chiffons
- One Heart - Céline Dion
- One In A Million - Bosson
- One Last Breath - Creed
- One Love / Get Ready People - Bob Marl…
- One Moment In Time - Whitney Houston
- One More Day - Diamond Rio
- One More Night - Phil Collins
- One More Try - George Michael
- One Night Stand - Enrique Iglesias
- One Of Us - Joan Osborne
- One Step Closer - Linkin Park
- One Sweet Day feat Boyz II Men - Maria…
- One Sweet Day feat Mariah Carey - Boyz…
- One Thing - Finger Eleven
- One Vision - Queen
- One Week - Barenaked Ladies
- Only Girl (In The World) - Rihanna
- Only A Woman Like You - Michael Bolton
- Only God Knows Why - Kid Rock [Letra Explícita]
- Only Hope - Mandy Moore
- Only The Lonely - Roy Orbison
- Only The Strong Survive - Jerry Butler
- Only The Very Best - Peter Kingsbery
- Only Time - Enya
- Only Wanna Be With You - Hootie & The …
- Only When I Sleep - The Corrs
- Only You - The Platters
- On Ne Change Pas - Céline Dion
- On N'Oublie Jamais Rien, On Vit Avec -…
- On The Radio - Donna Summer
- ....on the Radio (Remember the Days) -…
- On The Road Again - Willie Nelson
- On The Sunny Side Of The Street - Bill…
- On With The Show - The Rolling Stones
- Ooh, It's Kinda Crazy - Soul Decision
- Oops!... I Did It Again - Britney Spears
- Open Arms - Journey
- Open Road - Bryan Adams
- O.P.P. - Naughty By Nature
- Ordinary Day - Vanessa Carlton
- Ordinary People - The Box
- Ordinary World - Duran Duran
- Original Prankster - The Offspring [Letra Explícita]
- Original Sin - Elton John
- Original Sin - INXS
- Ose - Yannick Noah
- Osez Joséphine - Alain Bashung
- Osez Joséphine - Les Enfoirés
- Otherside - Red Hot Chili Peppers
- Our Lips Are Sealed - The Go-Go's
- Our Lives - The Calling
- Our Love Affair - Vic Damone
- Où Sont Les Femmes? - Patrick Juvet
- Out Of The Blue - Joe Cocker
- Out Of The Woods - Aselin Debison
- Outrageous - Britney Spears
- Outside - Staind
- Overdrive - Katy Rose
- Overprotected - Britney Spears
- Over The Edge - 3 Of Hearts
- Over The Hills And Far Away - Led Zeppelin
- Over The Rainbow - Harry Connick Jr.
- Over The Rainbow - Israel Kamakawiwo'ole
- Owner Of A Lonely Heart - Yes
- Oxygène - Diane Dufresne
- Oye Como Va - Celia Cruz
- Oyeme - Enrique Iglesias