Des O'Connor
Songs:
I Pretend
Anita O'Day
Songs:
Peanut Vendor
Rosie O'Donnell
Songs:
White Christmas (& Elton John) - Christmas (Baby, Please Come Home) (& Cher)
O'G3NE
Songs:
Het is over - Change Will Come (The Voice Of Holland live) - Magic - Lights and Shadows
The O'Kaysions
Songs:
Girl Watcher
O-Zone
Songs:
Dragostea Din Tei
Johnny O.
Songs:
Fantasy Girl
The Oak Ridge Boys
Songs:
Trying To Love Two Women - Elvira - Come On In - American Made - Sail Away
Agnes Obel
Songs:
Riverside
Ocean
Songs:
Put Your Hand In The Hand
Frank Ocean
Songs:
Thinkin Bout You - Novacane - Super Rich Kids (feat. Earl Sweatshirt) - Slide (feat. Calvin Harris & Migos)
Tom Odell
Songs:
Another Love - Real Love - Half as Good as You (feat. Alice Merton) - Heal - Long Way Down

Ofenbach
Songs: Head Shoulders Knees & Toes (& Quarterhead (feat. Norma Jean Martine)) - Be Mine - Katchi (feat. Nick Waterhouse) - Paradise (feat. Benjamin Ingrosso) - Rock It
Songs: Head Shoulders Knees & Toes (& Quarterhead (feat. Norma Jean Martine)) - Be Mine - Katchi (feat. Nick Waterhouse) - Paradise (feat. Benjamin Ingrosso) - Rock It
Ohio Express
Songs:
Yummy Yummy Yummy

Oklahoma! (musical)
The musical (1943)
See also:Oklahoma! (film)
Songs: People Will Say We're in Love - Oh What A Beautiful Morning - The Surrey with the Fringe on Top - I Cain't Say No - Out of my Dreams
The musical (1943)
See also:Oklahoma! (film)
Songs: People Will Say We're in Love - Oh What A Beautiful Morning - The Surrey with the Fringe on Top - I Cain't Say No - Out of my Dreams
Mike Oldfield
Songs:
Moonlight Shadow (& Maggie Reilly) - Shadow On The Wall (Roger Chapman) - To France (feat. Maggie Reilly) - Sailing
Fito Olivares
Songs:
Fin de semana (Cumbia)
Oliver
Songs:
Good Morning, Starshine

Oliver! (musical)
Musicals & Broadway 1960
Songs: Consider Yourself - Where Is Love? - As Long As He Needs Me - Oom Pah Pah - I'd Do Anything
Musicals & Broadway 1960
Songs: Consider Yourself - Where Is Love? - As Long As He Needs Me - Oom Pah Pah - I'd Do Anything
Olly Murs
Songs:
Beautiful To Me - Dance With Me Tonight - Troublemaker (feat. Flo Rida) - I Wan'na Be Like You (& Robbie Williams) - Dear Darlin'
Olympe
Songs:
Born To Die - Zombie - Non, je ne regrette rien - Désenchantée - Je veux savoir (We Love Disney 2)
OMC
Songs:
How Bizarre
OMI
Songs:
Cheerleader - Cheerleader (Felix Jaehn Remix) - Hula Hoop - Jambo (& Giusy Ferreri feat. Takagi & Ketra)
Olivia Ong
Songs:
L-O-V-E
Trijntje Oosterhuis
Songs:
For Once in My Life (live) - Kleine Jongen (live) - Face In The Crowd (& Lionel Richie) - Knocked Out - Ken je mij
Rita Ora
Songs:
Ritual (& Tiësto & Jonas Blue) - Carry On (& Kygo) - Your Song - Let You Love Me - For You (& Liam Payne)
Orange Juice
Songs:
Rip It Up

Roy Orbison
See also: The Traveling Wilburys
Songs: Oh, Pretty Woman - You Got It - Running Scared (with the Royal Philharmonic Orchestra) - Only the Lonely (Know the Way I Feel) - It's Over (with the Royal Philharmonic Orchestra)
See also: The Traveling Wilburys
Songs: Oh, Pretty Woman - You Got It - Running Scared (with the Royal Philharmonic Orchestra) - Only the Lonely (Know the Way I Feel) - It's Over (with the Royal Philharmonic Orchestra)

Orchestral Manoeuvres in the Dark
OMD
Songs: Sailing on the Seven Seas - Maid of Orleans (The Waltz Joan Of Arc) - If You Leave (Pretty in Pink) - Enola Gay
OMD
Songs: Sailing on the Seven Seas - Maid of Orleans (The Waltz Joan Of Arc) - If You Leave (Pretty in Pink) - Enola Gay
Orelsan
Songs:
Basique - Tout va bien - La terre est ronde - À l'heure où je me couche (& Gringe (Casseurs Flowters))
Orianthi
Songs:
According To You
Osborne Brothers
Songs:
Rocky Top

Ozzy Osbourne
See also: Black Sabbath & Kelly Osbourne
Songs: See You on the Other Side - Take What You Want (feat. Post Malone & Travis Scott) - Over the Mountain - Suicide Solution - Crazy Train
See also: Black Sabbath & Kelly Osbourne
Songs: See You on the Other Side - Take What You Want (feat. Post Malone & Travis Scott) - Over the Mountain - Suicide Solution - Crazy Train
Jimmy Osmond
Songs:
Mother of Mine

Otis Day And The Knights
Musical film National Lampoon's Animal House
Songs: Shama Lama Ding Dong - Shout
Musical film National Lampoon's Animal House
Songs: Shama Lama Ding Dong - Shout
Ottawan
Songs:
D.I.S.C.O (version française) - Haut les mains (Donne-moi ton cœur) - D.I.S.C.O (English version) - Hands Up (Give Me Your Heart) - D.I.S.C.O (short version)
Otto Knows
Songs:
Million Voices

OutKast
Songs: Hey Ya! (Radio Mix - Club Mix) - The Way You Move (feat. Sleepy Brown) - Roses (feat. Big Boi) - Int'l Players Anthem (I Choose You) (feat. UGK) - Ms. Jackson
Songs: Hey Ya! (Radio Mix - Club Mix) - The Way You Move (feat. Sleepy Brown) - Roses (feat. Big Boi) - Int'l Players Anthem (I Choose You) (feat. UGK) - Ms. Jackson
Outlandish
Songs:
Aïcha

Over the Moon
Songs: Ultraluminary (Phillipa Soo) - Rocket to the Moon (Reprise) - Rocket to the Moon
Songs: Ultraluminary (Phillipa Soo) - Rocket to the Moon (Reprise) - Rocket to the Moon
Chord Overstreet
Songs:
Hold On

Buck Owens
Buck Owens & His Buckaroos
Songs: Act Naturally - Streets of Bakersfield (& Dwight Yoakam) - Together Again - Crying Time (& His Buckaroos) - Keys In The Mailbox
Buck Owens & His Buckaroos
Songs: Act Naturally - Streets of Bakersfield (& Dwight Yoakam) - Together Again - Crying Time (& His Buckaroos) - Keys In The Mailbox

Owl City
Adam Young
Songs: Fireflies - Good Time (& Carly Rae Jepsen) - Shine Your Way (feat. Young & Yuna) - Vanilla Twilight - When Can I See You Again
Adam Young
Songs: Fireflies - Good Time (& Carly Rae Jepsen) - Shine Your Way (feat. Young & Yuna) - Vanilla Twilight - When Can I See You Again
John Ozila
Songs:
Medley tropical
Ozuna
Songs:
Taki Taki (& DJ Snake, Selena Gomez & Cardi B) - Caramelo - Escápate conmigo (feat. Wisin) - Criminal (& Natti Natasha) - Baila Baila Baila