| 646-O Sole Mio |
| 668-Obla Di Latin |
| 667-Obla Di Swing |
| 279-Oh what a beautiful Morning |
| 280-Oh you beautiful Doll |
| 759-Old Cape Cod |
| 880-Old Devil Moon |
| 161-Old Man River |
| 143-On a Clear Day |
| 155-On the Street where you live |
| 281-On the Sunny Side of the Street |
| 160-Once I loved |
| 159-One Note Samba |
| 881-Only Trust Your Heart |
| 833-Only You |
| 325-Our Love is Here to Stay |
| 590-Our_Love_Is_HTS_F |
| 882-Out of Nowhere |
| 156-Over the Rainbow |