Play Time | Track | Track Num | Artist | Album | Genre | Year |
| 2:09 | Oh, Sing Sweet Nightingale | 21 | Ilene Woods | Classic Disney Vol. 4: 60 Years of Music & Magic | Children's Music | 2000 |
| 7:20 | Oh, Thank You Great Spirit | 7 | Chicago | Chicago VIII [Bonus Tracks] | Rock | 1975 |
| 2:57 | Oh, the Deep, Deep Love of Jesus | 2 | Bonnie Haidle | What Wondrous Love | Religious | 2000 |
| 6:05 | Ohm Sweet Ohm | 5 | Apoptygma Berzerk | Mourn EP | Techno-Industrial | 1997 |
| 2:29 | Ohne Aufenthalt Polka for orchestra, Op 112 | 1 | Cincinnati Pops Orchestra | The Telarc Collection, Vol. 9 | Orchestral | 1993 |
| 3:57 | Ohne Dich | 3 | Second Decay | DeeJay Tribe 2 (Disc 1) | Industrial | 1999 |
| 4:50 | Ohne Wiederkehr | 14 | Blutengel | Un:Sterblich: Our Souls Will Never Die (Disc 1) | Dance | 2023 |
| 1:45 | Ohohoh | 9 | Johnette Napolitano | Vowel Movement | Rock | 1995 |
| 1:18 | Oi Canada | 4 | Fallouts | Skookum Chief Powered... Teenage Zit Rock Angst [CDR] | Other | 1995 |
| 3:10 | Oink, Oink Mambo | 11 | Chuy Reyes & His Orchestra | Ultra Lounge Vol. 2 - Mambo Fever | Easy Listening | 1996 |
| 3:35 | Ojai | 12 | Lissie | My Wild West | Pop | 2016 |
| 1:58 | Ojibway Square Dance (Love Song) | 1 | Georgia Wettlin-Larsen | More Music From Northern Exposure | Soundtrack | 1994 |
| 9:50 | OK Amp - Let Me Out | 6 | Apoptygma Berzerk | Harmonizer | Techno-Industrial | 2002 |
| 1:58 | OK/No Way | 10 | Mission of Burma | Mission of Burma | Punk | 1988 |
| 4:21 | Okey Dokey | 10 | Traci Lords | 1000 Fires | Techno | 1995 |
| 1:16 | Oklahoma | 11 | 101 Strings | The Best of The Great American Composers | Misc | 1996 |
| 1:16 | Oklahoma | 11 | 101 Strings | The Great American Composers, Vol. 1 | Easy Listening | 1996 |
| 3:21 | Oktober County | 11 | Neal Hellman | Oktober County | Folk | 1987 |
| 5:15 | Old | 10 | Assemblage 23 | Meta | Industrial | 2007 |
| 2:19 | Old | 3 | Paul Simon | You're the One | Folk Rock | 2000 |
| 6:32 | Old (Hidden Track) | 8 | Blutengel | Erlösung: The Victory of Light (Disc 2) | Dance | 2021 |
| 5:06 | Old and Wise | 10 | The Alan Parsons Project | Eye In the Sky | Rock | 1983 |
| 3:20 | Old Brown Shoe | 7 | Beatles | 1967-1970 (Disc 2) | Rock & Roll | 1993 |
| 2:38 | Old Cape Cod | 4 | Patti Page | Golden Hits | Popular | 1960 |
| 3:34 | Old Days | 10 | Chicago | Chicago VIII [Bonus Tracks] | Rock | 1975 |
| 4:03 | Old Deuteronomy | 10 | Andrew Lloyd Webber | Cats, Complete Original Broadway Cast Recording (Disc 1) | Musical | 1982 |
| 4:06 | Old Devil Moon | 8 | Don Francks | Finian's Rainbow | Soundtrack | 2006 |
| 3:57 | Old Devil Moon | 6 | Frank Sinatra | Songs For Swingin' Lovers! | Vocal | 1956 |
| 2:45 | Old Enough | 4 | Nickelback | The State | Metal | 2000 |
| 4:13 | Old Familiar | 9 | Kathleen Wilhoite | Pitch Like a Girl | Alternative | 1998 |
| 1:23 | Old Fart At Play | 10 | Captain Beefheart & His Magic Band | Grow Fins Rarities [1965-1982] (Disc 3) | Blues Rock | 1999 |
| 3:07 | Old Folks Boogie | 10 | Captain Beefheart & His Magic Band | Grow Fins Rarities [1965-1982] (Disc 1) | Blues Rock | 1999 |
| 2:59 | Old Friend | 4 | Poor Man's Whiskey | Train To California | Bluegrass | 2003 |
| 2:52 | Old Friends | 17 | Simon & Garfunkel | The Concert In Central Park (Live) | Folk-Rock | 1982 |
| 3:57 | Old Friends/Bookends | 2 | Simon & Garfunkel | Old Friends (Disc 3) | Folk | 1997 |
| 7:04 | Old Fun #1 | 3 | µ-Ziq | In Pine Effect | Electronic | 1995 |
| 4:23 | Old Ghosts | 7 | Jethro Tull | Stormwatch | Rock | 1979 |
| 3:50 | Old Hat | 7 | Harvey Danger | Where Have All the Merrymakers Gone? | Indie Rock | 1997 |
| 0:27 | Old Ladies | 11 | Dionne Farris | Wild Seed - Wild Flower | Jazz | 1994 |
| 4:26 | Old Light (Voices From 93 Million Miles Away Remix) | 12 | Pase Rock | Free Soul Nujabes Second Collection | <Unknown> | 2000 |
| 3:19 | Old Man | 5 | Stereomud | Perfect Self | Metal | 2001 |
| 3:23 | Old Man | 4 | Neil Young | Wonder Boys | Soundtrack | 2000 |
| 3:27 | Old Man | 5 | ZZ Top | ZZ Top's First Album | Rock | 1971 |
| 3:16 | Old Man Mose | 5 | The Manhattan Transfer | The Spirit of St. Louis | Jazz | 2000 |
| 1:03 | Old Master Painter~You Are My Sunshine | 5 | Brian Wilson | Smile | Rock | 2004 |
| 2:58 | Old Maui | 1 | Abney Park | Technoshanties | Steampunk | 2021 |
| 3:04 | Old McDonald Had a Girl [*] | 14 | Mel Henke | La Dolce Henke | Jazz | 1962 |
| 19:32 | Old Medley: Dance on a Volcano / The Lamb Lies Down on Broadway / The Musical... | 1 | Genesis | The Way We Walk, Volume 2: The Longs | Rock | 1993 |
| 4:31 | Old Money | 10 | Lana Del Rey | Ultraviolence | Pop | 2014 |
| 2:16 | Old Mr. Heffer | 7 | 4 Non Blondes | Bigger, Better, Faster, More! | Rock | 1992 |