He was the author who wrote the most music for the first films of the seventh Vietnamese art in the sixties, many of which became classic cinematographic works of Vietnam: Con chim vānh khuyên (The Canary Bird), Khói trắng (The white smoke), Vĩ tuyến mười bảy ngày và đêm (17th parallel day and night), Em bé Hà Nội (The little girl of Hà Nôi), Mối tình đầu (First love)...