Taiwan Docs

ABBA is a new style musical documentary, and the biography of the King of Taiwanese songs - HUNG, Yi-Feng. The story began in 2010, the promised concert between the three sons of Hung for their father. In search of their father, the three brothers found the missing puzzles of their life, and gradually pieced together the life of the legendary music master, their beloved father.

Source: Taiwan Int'l Documentary Festival
http://www.tidf.org.tw/tidfnew/Eng/Films.aspx?Year=2012&TID=15