As Time Goes by in Shanghai
A movie about the vital power of music and a unique insight into Chinese history.
Starring Jibin Sun, Zhengzhen Bao, Jingyu Zhang
Watch "As Time Goes by in Shanghai" from streaming services docurama (Prime), Amazon released in 2013. It's a documentary and music movie, and has a rating of 6.5 out of 10 from Imdb which is usually fine for this kind of movie.