| Name | Type | CC | Key(s) | Times Played |
|---|---|---|---|---|
| O'Rahilly's March | march | g | 2 | |
| O'Rourke's | reel | a | 1 | |
| O'Sullivan's | polka | ✓ | g | 12 |
| O'Sullivan's March | march | g | 3 | |
| Oblique | jig | emin | 1 | |
| Off She Goes | slide | d | 2 | |
| Off To California | hornpipe | ✓ | g | 12 |
| Old Copperplate | reel | amin | 8 | |
| Old Favorite | jig | ✓ | g | 16 |
| Old Flail | jig | g | 1 |