Justin Li began his vocal training in Hong Kong with tenor David Quah and continued later in London under the tutelage of mezzo soprano Catrin Johnsson. Li has worked extensively as guest soloist with various local choirs and organizations, such as Hong Kong Voices, SingFest, Die Konzertisten and Hong Kong Youth Choir. His repertoire includes Handel’s Messiah, Mendelssohn’s Elijah, Mozart’s Requiem in D minor K.626, Beethoven’s Symphony No.9, “Choral”, Britten’s Cantata Saint Nicolas, Puccini’s Messa di Gloria and J.S. Bach’s St. John Passion, in which he made his debut as Evangelist in 2014. He has also worked with various conductors such as Wolfgang Katschner in Monteverdi’s Vespro della Beata Vergine, Prof. William Weinert in J.S. Bach’s Cantata BWV 21, Prof. John Butt in J.S. Bach’s St John Passion and Gábor Hollerung in The Chinese University of Hong Kong Chorus’ 50^th Anniversary Concert, singing Rossini’s Petite messe solennelle. In March 2024, Li has worked with The Learners Chorus and Macau Orchestra in Macau singing Bach’s Easter Oratorio under the baton of Apollo Wong.