| Title | Air 15 (t) |
| Short Title | Beggar's Opera, 1777 |
| Page | 45 |
| Genre | BA |
| Country | E |
| Instruments | VO |
| Incipit | //6-3-3-/6-1//217-16-/134//3634/321 |
| Indicated Tune | Pretty Parrot, Say, &c. (it) |
| First Line | Pretty Polly, say (fl) |
| Stress Notes | 662133 |
| Intervals | -4,4,3,2,-2,-2,2,-3,3,3,2,-2,4,-4,2,-2,-2,-2, |
| Key Signature | Bb,EUb |
| Time Signature | 3/2 |
| Do | Bb |
| Date | 1777 |
| Number | M7.15 |