Yuen's other operatic roles include Romilda (Xerxes), Violetta (La Traviata), Aida, Gilda (Rigoletto), Titania (A Midsummer Night's Dream), Rosalinda (Die Fledermaus), Nedda (Pagliacci), Siok Imm (Bunga Mawar), Leonora (Il trovatore), the title role of Tosca, Liza (The Queen of Spades), Mimi (La bohème), Jenny (Mahagonny-Songspiel), Micaela (Carmen), Pamina (The Magic Flute) with Opera Queensland, Donna Anna (Don Giovanni) and Liu (Turandot).
She is currently the Head of Vocal Studies at the Hong Kong Academy for Performing Arts and the residing soprano of Thailand's Bangkok Opera.
She performs regularly at the main UK venues and in Europe, the United States, the Middle East and Asia.
In 2004 Yuen released her first solo CD, Per l'amore, with the Siam Philharmonic Orchestra under the baton of Somtow Sucharitkul.
She made her debut with the Macau Symphony Orchestra singing the soprano solo in Mendelssohn's Midsummer Night's Dream.