PIRATE PRODUCTIONS Yvonne Hay
| Show (year) | Role |
| A Song to Sing, O! (1992) | Rehearsal pianist |
| Oedipus Tyrannus (1992) | Piano |
| Pirates of Penzance (10th Anniversary) (1989) | Musical Director |
| Jack and the Beanstalk (1989) | Rehearsal Pianist |
| Trial By Jury (Love is a plaintiff song) (1988) | Accompanist |
| Ruddigore (1987) | Rehearsal pianist, Accompanist for charity performance |
| HMS Pinafore (1986) | Musical Director |
| Pirates of Penzance (1979) | Rehearsal pianist |