Rosemary’s operatic roles include Juliette (Roméo et Juliette); Armide (Armide); Donna Elvira (Don Giovanni); Micaëla (Carmen); Giunone (La Calisto); Dorinda (Orlando); Lauretta (Gianni Schicchi); Papagena (Die Zauberflöte); Sophie (Werther) and Barbarina (Le Nozze di Figaro).

In competition Rosemary took the Richard Strauss prize and 3rd Prize at the Elbe Internationaler Gesangswettbewerb 2019, and was a finalist in the Anton Rubinstein International Vocal Competition 2019.

Rosemary studied music at the University of York, where she specialised in historical performance practice under the guidance of Peter Seymour. She then gained her MMus in singing at the Conservatorium van Amsterdam, studying in both the classical and early music departments. Prior to training as a singer Rosemary performed as an actor and was a seasonal actor for Merlin Entertainments. She remains active as a voice actor.