Orange Sky Noppadon Hiranrat, Alexi Murdoch Klavier, Gitarre, E-Gitarre Evangelium, New Age, Klassisch, Pop, Volksmusik
Orange Juice Melanie Martinez, Michael Keenan Leary, Dario D'aversa, Steven King Gitarre Alternative Pop/Rock, Indie Pop, Folk Welt und Land, Pop
Organ Grinder Blues Clarence Williams Orgel, Gitarre, E-Gitarre, Klavier Boogie Woogie, Jazz, Pop, Blues
Ordinary Barenaked Ladies, Bart Hendrickson, Patrick Monahan, Train, Pat Monahan Gitarre, Klavier, E-Gitarre Alternative Pop/Rock, Erwachsene Alternative, Pop Rock, Bühne & Leinwand, Rock
Ordinary Love David Evans, Brian Burton, Dan Truman, The Edge, Adam Clayton, Bob DiPiero Schlagzeug, Gitarre, Klavier Country, Rock, Pop, Pop Rock, Volksmusik
One Of Your Girls Oscar Gorres, Troye Sivan Mellet, Troye Sivan, Amy Casey, Brett Leland McLaughlin Klavier Rhythm & Blues, Pop
One Road Jussi Kontinen, Steven Lee Lukather, Randy Goodrum, Steve Lukather, David Paich, Sick Boy Tenor, Schlagzeug, E-Gitarre, Gitarre Pop, Pop Rock, Rock, Soft Rock
One Sweet World David J. Matthews, Dave Matthews Gitarre, E-Gitarre Volksmusik, Erwachsene Alternative, Jam Band, Alternative Pop/Rock, Amerikanischer Trad Rock
One Thing Right Christopher Comstock, Kane Brown, Matthew John McGinn, Josh Hoge, Jesse Frasure, Matthew McGinn Klavier, Gitarre, E-Gitarre Pop, Elektronisch, Country Pop
Ordinary Day Vanessa Carlton, Shaina Taub, Toby Anderson Klavier, Gitarre, E-Gitarre Pop, Pop Rock, Easy Listening, Rock, Erwachsene Contemporary-Musik
Ordinary Things Gavin Jackson Music, Ariana Grande, Nick Lee Bassgitarre, Gitarre, Bass Pop, Rhythm & Blues
I Exalt Thee / Open the Eyes of My Heart Mark Hayes, Larry Shackley, Deborah Brady, Ken Medema, Stephen DeCesare, Paul Baloche Gitarre, Klavier, Violine, Flöte, Cello, Ukulele Pop Rock, Evangelium, Bühne & Leinwand, Rock, Pop
Open Up Your Door Julie Doubleday, Richard Hawley Klavier, Gitarre, E-Gitarre, Violine, Bratsche, Cello Pop, Volksmusik, Alternative, Rock
Operation Ouch Dobs Vye, Jose Ignacio Huante Ceron, Jess Charles Klavier Kinder, Oper, Rock, Pop, Bühne & Leinwand
