Santouri (2007)
Santouri (known as The Music Man in English, سنتوری in Persian) is a 2007 Iranian drama film directed by Dariush Mehrjui dealing with the life of a santour player named Ali Bolourchi. The film's title, "Santouri" refers to one who can play the santour instrument. It is noteworthy that, in Persian "playing the Santour" is also the euphemism for injecting heroin into one's veins; thrashing, for instance, one's arm for causing the main artery of the arm to swell, in preparation for the injection, is reminiscent of playing the santour.
More at Wikipedia.