| Title | Air 15 (t) |
| Short Title | Beggar's Opera, 1777 |
| Page | 46 |
| Genre | BA |
| Country | E |
| Instruments | VO |
| Incipit | //121/11//232/22//345/7-16- |
| Indicated Tune | Pray, Fair One, Be Kind (it) |
| First Line | My heart was so free (fl) |
| Stress Notes | 112237 |
| Intervals | 2,-2,2,2,-2,2,2,2,-6,2,-3, |
| Key Signature | Bb,EUb |
| Time Signature | 6/8 |
| Do | Bb |
| Date | 1777 |
| Number | M7.16 |