persian+classical+iranian+contemporary+essentials+instrumental+orchestral+symphony+strings+world+middle+eastern+oriental+study+work+piano+cello+violin+symphonies+opera+gooshyar+%DA%AF%D9%88%D8%B4%DB%8C%D8%A7%D8%B1+%DA%A9%D9%84%D8%A7%D8%B3%DB%8C%DA%A9+%D8%A7%DB%8C%D8%B1%D8%A7%D9%86%DB%8C