Justin Cheung’s earliest encounters with music were when he studied piano under the tutelage of his mother and sang in the Hong Kong Children's Choir. He obtained an Associate Degree in Music Studies from the Hong Kong Baptist University, majoring in piano under Amelia Chan. Apart from classical music training, he has great passion towards A Cappella music. He has been actively engaged in performing, as well as teaching A Cappella singing. As a performer, he has participated in 2012 & 2013 HKFYG Jockey Club Hong Kong International A Cappella Festival, as a member of the Hong Kong Melody Makers. He has also sung in various gigs and performances with a number of groups, including Republic-A and Just A Cappella. He currently studies music at the Hong Kong Academy for Performing Arts (HKAPA), majoring in opera and vocal studies under David Quah, expected to graduate in 2018. He has involved in several opera productions, included the role of Simone in Gianni Schicchi and Marcello in La Boheme, which were staged at HKAPA; and joined as chorus member in Opera Hong Kong 2016 production – Otello and 2017 production – Aïda.