Frank Ocean
Songs: Novacane - Thinkin Bout You - Slide (feat. Calvin Harris & Migos) - Super Rich Kids (feat. Earl Sweatshirt)
Leslie Odom Jr.
See also: Hamilton
Songs: Shape of My Heart (& Josh Groban) - Speak Now (One Night in Miami...)
Ofenbach
Songs: Head Shoulders Knees & Toes (& Quarterhead (feat. Norma Jean Martine)) - Paradise (feat. Benjamin Ingrosso) - Wasted Love (feat. Lagique) - Be Mine - Katchi (feat. Nick Waterhouse)
Mike Oldfield Songs: Moonlight Shadow (feat. Maggie Reilly) - To France (feat. Maggie Reilly) - Shadow on the Wall (feat. Roger Chapman) - Sailing (feat. Luke Spiller)
Fito Olivares Songs: Fin de semana (Cumbia)
Oliver & Company
Music from the Motion Picture (1988)
Songs: Why Should I Worry? (Billy Joel) - Mais pourquoi m'en faire ?
Don Omar
Songs: Danza kuduro (feat. Lucenzo) - Ella y Yo (& Aventura) - Dile - Taboo - Dale don dale (feat. Glory)
OMC Songs: How Bizarre
Rita Ora
Songs: Your Song - Big (feat. Imanbek, David Guetta & Gunna) - Bang Bang (& Imanbek) - Anywhere - Ritual (& Tiësto & Jonas Blue)
Orchestral Manoeuvres in the Dark
OMD
Songs: If You Leave (Pretty in Pink) - Maid of Orleans (The Waltz Joan Of Arc) - Enola Gay - Sailing on the Seven Seas
OutKast
Songs: Int'l Players Anthem (I Choose You) (feat. UGK) - Hey Ya! (Radio Mix - Club Mix) - Elevators (Me & You) - The Way You Move (feat. Sleepy Brown) - Ms. Jackson