John Koo serves as the Founder and Vocal Director of the Singapore Children's and Youth Show Choir. At the age of 13, he clinched the Champion title in a SCV Song Challenge, earning the opportunity to share the stage with local pop sensation Tanya Chua at the National Day Parade in 2000. Beyond his role as a pianist and vocalist, he embarked on his choral conducting journey at the early age of 19. Presently, he holds the positions of director at Glee Studios and Vocal Director for the Singapore Children's and Youth Show Choir. Passionate about nurturing young performers in Performing Arts, Koo, an outstanding vocal teacher in Hong Kong, has coached students to success in international. His students achieved distinction as the top South East Asia entry in the Beijing Arts Festival, highlighting Koo's significant impact on fostering artistic talent and creativity.