Number One John Legend, Daniel S Lapidus, Jeff Tincher, Francisco Cotto, John Stephens, Curtis Mayfield Guitar, Piano, Soprano, Tenor, Baritone, Viola Folk, Blues, Neo Soul, Folk Rock, Pop Rock
O Caritas Andreas Toumazis, Jeremy Taylor, Cat Stevens, Yusuf Islam, Daniel Fichera Piano, Guitar Folk, Rock, Folk Rock, Pop
Oh Cecilia Amund Bjorklund, James McVey, Bradley Simpson, Tristan Evans, Keinan Abdi Warsame, Amund Bjoerklund Piano, Guitar, Electric guitar Pop Rock, Folk Rock, Pop, Folk, Alternative Pop/Rock
Ohio Betty Comden, Jeff Tincher, Young Crosby, Adolph Green, Leonard Bernstein, Neil Young Piano, Guitar, Ukulele, Electric guitar Protest Music, Album Rock, Pop, Folk, Children
Oh Very Young Cat Stevens, Elvis Presley Piano, Guitar, Ukulele, Electric guitar Psychedelic, Soft Rock, Folk, Folk Rock, Rock
Not Yet Jenn Bostic, Jennifer Bostic, Barrett Yeretsian Piano, Guitar, Electric guitar Folk Rock, Adult Alternative, Neo Soul, Valentine's Day, Folk
Old College Avenue Harry Chapin Guitar, Electric guitar Pop, Adult Contemporary, Blues, Folk Rock, Jazz
Old Lady Jeremy Fraites, Wesley Schultz, Jeremiah Fraites, The Lumineers Guitar, Piano, Electric guitar Folk, Folk Rock, Reggae, Country, Pop
Old King Crazy Horse, Neil Young Guitar, Electric guitar, Piano Folk, Country Rock, Pop Rock, Hard Rock, Folk Rock
Old Man Frank Lee Beard, Randy Newman, Billy Gibbons, Dusty Hill, Mark Slaughter, Dan Truman Organ, Piano, Electronic keyboard, Viola, Cello, Violin Folk, Pop, Album Rock, Rock, Country
Oliver James Fleet Foxes, Robin Pecknold Electric guitar, Guitar, Piano Alternative Pop/Rock, Country, Pop, Indie Rock, Folk Rock
