Lyric Baritone Caleb Woo was granted chances to perform many Bach vocal works, such as St John Passion, St Matthew Passion, St. Mark Passion, Magnificat, Christmas Oratorio, B minor Mass, Cantata 4, 6, 21, 22, 30, 38, 47, 62, 70, 78, 80, 82, 94, 102, 131, 139, 147, 158 and 211 in these few years, which brought him to perform under the baton of John Butt, David Chin, Wolfgang Katschner, Felix Yeung and Felix Shuen which enhanced his understanding of early music appeared in BachFest Malaysia, Thüringer Bachwochen; The Performances of Oratorio such as Handel’s Messiah, Israel in Egypt, Hadyn’s The Creation, Mozart’s Requiem, Mendelssohn’s St. Paul’s and Elijah, Faure’s Requiem, Brahms’ Ein Deutsches Requiem which brought Caleb to collaborate with Christopher Seaman, Helmuth Reiling, Paul Goodwin, William Weinert, Johnathan Cohen, Jahja Ling, Lio Kuokman and Yip Wing-sie. Caleb also participates in Opera productions, recently he participated in the production of Por Por and Women Like Us, the award-winning Opera Angel’s Bone produced by the New Vision Arts Festival and the Beijing Music Festival; original Operas composed by Chan Hin-yan, Kungfood, Datong  and the Heart of Coral,  Caleb also participated in productions by Opera Hong Kong, Hong Kong City Opera, Musica Viva, Pop up Production, putting up La Traviata, Orphee aux enfers, La Bohéme and to name a few.