Dr. Sak is also a sought-after string pedagogue.  He is the first Hong Kong native to receive a doctorate in violin performance. He has studied in Germany, England and in the USA under the tutelage of world-famous violinists and pedagogues including Michael Goldstein, Albert Markov, Yfrah Neaman, Petru Munteanu and Dr. John Bauer.  As a violinist/violist, he has held principal positions in orchestras and has toured to China, Japan, Korea, Singapore, Malaysia, Italy, Germany, Switzerland, Sweden and Finland. He joined the City Chamber Orchestra of Hong Kong in 2001 as Principal 2nd Violin and subsequently became a Co-leader. Currently, besides teaching in his private studio, he is on the faculty of the Richmond Music School where he teaches violin, viola and chamber music.