Orchids Shawn Economaki, Josh Rand, Joel Ekman, Stone Sour Guitar, Electric guitar Alternative Rock, Metal, Rock
Ordinary Barenaked Ladies, Bart Hendrickson, Patrick Monahan, Train, Pat Monahan Guitar, Piano, Electric guitar Rock, Folk, Alternative Pop/Rock, Stage & Screen, Adult Alternative
Ordinary Love David Evans, Brian Burton, Dan Truman, The Edge, Adam Clayton, Bob DiPiero Guitar, Piano, Drums Pop, Romantic, Folk, Pop Rock, Rock
One Road Jussi Kontinen, Steven Lee Lukather, Randy Goodrum, Steve Lukather, David Paich, Sick Boy Drums, Drum Set, Tenor, Guitar, Electric guitar Pop Rock, Soft Rock, Pop, Rock
One Sweet World David J. Matthews, Dave Matthews Guitar, Electric guitar Rock, American Trad Rock, Folk, Adult Alternative, Pop Rock
Ordinary Day Vanessa Carlton, Shaina Taub, Toby Anderson Piano, Guitar, Electric guitar Folk, Adult Alternative, Rock, Adult Contemporary, Pop Rock
I Exalt Thee / Open the Eyes of My Heart Mark Hayes, Larry Shackley, Deborah Brady, Ken Medema, Stephen DeCesare, Paul Baloche Piano, Guitar, Ukulele, Bass guitar, Soprano Saxophone, Tenor Saxophone Rock, Contemporary Christian, Pop Rock, Stage & Screen, Gospel
Open Up Your Door Julie Doubleday, Richard Hawley Guitar, Cello, Viola, Violin, Piano, Electric guitar alternative, Pop, Folk, Rock
Operation Ouch Dobs Vye, Jose Ignacio Huante Ceron, Jess Charles Piano Pop, Rock, Opera, Stage & Screen, Children
Original Sin Andrew Charles Farriss, Elton John, Andrew Farriss, Michael Hutchence, Bill Bruford, Michael Kelland John Hutchence Piano, Guitar, Electric guitar, Soprano Saxophone, Double Bass Pop, Album Rock, College Rock, Rock, Jazz
Orion Cliff Burton, Metallica, James Hetfield, Gabriela Quintero Lopez, Lars Ulrich, Rodrigo y Gabriela Guitar, Electric guitar Rock, Hard Rock, Pop Rock, Pop, Folk
Orphan Girl / Travelin' Man Chris Miller Guitar, Piano Traditional Pop, Pop, Stage & Screen, Rock, Musical
One Track Mind Eric Clapton, Craig Carnelia, The Knickerbockers, Marvin Hamlisch, Keith Colley, Kevin Colley Piano, Guitar, Electric guitar Folk, Blues Rock, Rock, Pop, Pop Rock
One Vision Brian May, Freddie Mercury, John Deacon, Philip Lawson, Roger Taylor, Queen Piano, Guitar, Electric guitar, Bass, Drums Art-Rock/Progressive, Pop, Hard Rock, Album Rock, Glam Rock
Only a Fool Rich Robinson, Chris Robinson, The Black Crowes Guitar, Electric guitar Hard Rock, Rock, Pop
