Number One John Legend, Daniel S Lapidus, Jeff Tincher, Francisco Cotto, John Stephens, Curtis Mayfield Klavier, Gitarre, Sopran-Saxophon, Baritonsaxophon, Altsaxophon, Tenorsaxophon Neo Soul, Pop, Blues, Folk Rock, Volksmusik
O Caritas Andreas Toumazis, Jeremy Taylor, Cat Stevens, Yusuf Islam, Daniel Fichera Klavier, Gitarre Rock, Folk Rock, Volksmusik, Pop
October Road James Taylor Klavier, Gitarre Pop, Folk Rock, Country, Erwachsene Contemporary-Musik, Soft Rock
Oft Gefragt Henning Gemke Gitarre, Klavier Folk Rock, Rock, Folk Welt und Land, Indie-Rock, Volksmusik
Oh Cecilia Amund Bjorklund, James McVey, Bradley Simpson, Tristan Evans, Keinan Abdi Warsame, Amund Bjoerklund Gitarre, Klavier, E-Gitarre Pop, Alternative Pop/Rock, Teen Pop, Folk Rock, Volksmusik
Ohio Betty Comden, Jeff Tincher, Young Crosby, Adolph Green, Leonard Bernstein, Neil Young Klavier, Gitarre, Ukulele, E-Gitarre Classic Rock, Album Rock, Bühne & Leinwand, Country, Hard Rock
Oh Very Young Cat Stevens, Elvis Presley Gitarre, Klavier, Ukulele, E-Gitarre Volksmusik, Pop Rock, Psychedelisch, Folk Rock, Album Rock
Not Yet Jenn Bostic, Jennifer Bostic, Barrett Yeretsian Gitarre, E-Gitarre, Klavier Folk Rock, Volksmusik, Erwachsene Alternative, Ballade, Pop
Old College Avenue Harry Chapin Gitarre, E-Gitarre Erwachsene Contemporary-Musik, Blues, Folk Rock, Pop Rock, Pop
Old Lady Jeremy Fraites, Wesley Schultz, Jeremiah Fraites, The Lumineers Klavier, Gitarre, E-Gitarre Country, Indie Pop, Folk Rock, Volksmusik, Reggae
Old King Crazy Horse, Neil Young Klavier, Gitarre, E-Gitarre Folk Rock, Country Rock, Album Rock, Hard Rock, Heartland Rock
Old Man Frank Lee Beard, Randy Newman, Billy Gibbons, Dusty Hill, Mark Slaughter, Dan Truman Banjo, Mandolinenbanjo, Ukulele, Klavier, Gitarre, Violine Country, Pop, Album Rock, Klassisch, Vatertag
Oliver James Fleet Foxes, Robin Pecknold Klavier, Gitarre, E-Gitarre Pop, Alternative Pop/Rock, Folk Rock, Alternative Folk, Rock
