As a concert saxophonist and founder of Opus a la Carte, Yin Tak AU has performed in Hong Kong, Shanghai, Shenzhen, Taiwan, Singapore, Strasbourg, Scotland, Japan, and the USA. She has appeared as soloist with various ensembles in Hong Kong, the USA and Taiwan, including Clementi Secondary School Band, Clementi Secondary Orchestra, Mclean Youth Orchestra, Klappen Ensemble & Parsons Wind Orchestra, Klappen Ensemble, Galaxy Wind Ensemble, Hong Kong Tak Ming Philharmonic Winds, PM Concert Band, and Hong Kong International Band Fair Youth Band. Au is the founder of Pipe & Phone (Pipe Organ and Saxophone Duo), Hong Kong Saxophone Ensemble, and Saxo-Electro (A saxophone duo focus on electronic music genre), and Opus a la Carte Collective.
Beside being an enthusiast of concert saxophone music, Au also plays pop, funk, and jazz music. Au has been invited to Radio Television 4 Hong Kong, RTHK 3 TV, and TVB for interview as well as live performing broadcast.
Au mainly self-taught as a youth. In 2001, she went abroad to study with Kent H. Eanes at County College of Morris in New Jersey, USA. She received her bachelor degree in music performance from George Mason University, Virginia, where she studied with Dale Underwood.