1.   After the war, he was the program director at the WOFA Blue Danube radio network and studied opera singing under Fritz Krenn.

2.   No Three Tenors at Salzburg, but the opera singing has usually been very good.

3.   Opera singing seems to drive men mad.

4.   The opera singing is marked by the same natural emotion and sincerity, and it is better.

5.   There seems to be a gradual blurring of the distinction between just producing notes and the kind of excitement and music making that opera singing can be about.

6.   Tsang developed his own style of Cantonese opera singing, which became known as Sun Ma Sze Tsang, which he later adopted as his stage name.