Hey Doubleblade, your dad is one of the majority. He is not wrong, he is only misinformed. How old is he? It's not just as simple as do as you wish kind of thing. However, I do believe that if he were to be given the right info, he will support you all the way.
Some of the things your dad needs to know is what are the career opportunities available and how succesful can you be in the future...all dads think like that. So you got to do a little bit of homework to find out, for example... the company that produced smahing hits like matrix employs sound engineers, and music techies from Singapore. Jack Neo productions, Raintree, and many others who will be coming this way will be emplying from Singapore, or engaging free lance techies here. Why do you think the polys and La Salle wants to start courses like this. Get the facts and talk to your dad, but give the the respect and he will respect you.