| Title | Invocation, The (t) |
| Short Title | Watts MM-2, 1729 |
| Page | 68-69 |
| Genre | SC |
| Country | E |
| Instruments | VO/VN |
| Incipit | //34/25//12/31+//65/671+ |
| First Line | Ye virgin pow'rs, Defend my heart (fl) |
| Verses | 2 |
| Authors | Lady, A |
| Stress Notes | 321366 |
| Intervals | 2,-3,4,-5,2,2,6,-3,-2,2,2,2, |
| Key Signature | Bb |
| Time Signature | C/ |
| Do | F |
| Date | 1729 |
| Number | E21.28 |