There was a super great documentary once on TV called something like Wan Lee and his daughters. It was about a traditional Chinese folk singer. It was his families job throughout their generations to continue the folk music of his people somewhere in the North West of China. But it was traditional for his sons to do so and he had sons only daughters, the documentary showed his anguish as the thought of his traditional music dieing out because his daughters weren’t interested in continuing the traditions and learning the songs. I sometimes try a search for this doc. but it has vanished it seems, but one of the most memorable moments on Tv and a pleasure to have seen.