Donaldson started singing at the age of seven, after winning an eisteddfod. She was trained at the Queensland Conservatorium of Music, Brisbane, and graduated with a Bachelor of Music and a Graduate Diploma in Opera. While at university, she performed in many shows, including Gilbert and Sullivan's Iolanthe as Phyllis. Her first professional role was as a chorus member and swing in The Phantom of the Opera in 1990. The role that gave her real recognition in the Australian theatre industry was as Mabel in Essgee Entertainment's The Pirates of Penzance. She has performed in several other...
