Roles she played include Semele, Tales of Hoffmann, Gianni Schicchi, Hansel and Gretel, Die Zauberflote and Rigoletto which gained her glowing reviews from OPERA magazine.
Gillian is also highly regarded as a recital singer with a varied repertoire of Lieder, Spanish, French and Italian song, as well as being a respected exponent of Maltese Baroque music of which she has recorded several CD's and most recently a solo CD album of songs by Paolo Tosti.
She has performed in Germany, US, France, London, and Romania and has collaborated with many notable artists including Joseph Calleja. Gillian has been the Music Director for Drama Troupe for the past 10 years during which time, together with Lorraine Aquilina, she has striven to promote classical music amongst the younger generation alongside ensuring a high level of vocal studies and performance techniques in all genres. She has also been the director of the Joseph Calleja HSBC Children's Choir for the past 3 years.