Director Victor Vu described Phan Manh Quynh's composition this time: "I once heard this song when Quynh sent me a demo to listen to it. The first version was already very "happy". But on the day the film was released, when the song rang out with the final frames of the film, I had very indescribable emotions. It's been a long time since I've felt that way when listening to a song. I am completely happy with this song of the film.
The image of the film, in addition to the gentle love story of Master - Russia, the string of detective Kien - Mo Hai Man is also built with cuts with a great scene, showing the beauty of majestic or pristine mountains and rivers. This is also the intention of the crew that wants to emphasize the beauty of the homeland, arouse national pride in this period of joy.
Phan Manh Quynh is one of the few people who previewed the film adaptation of "Detective Kien: Ky an khong dau".
As soon as I watched that version, I felt the charm of the film. Although I was very afraid of horror details, I could not take my eyes off the film. This time, I was even luckier when Victor gave me the opportunity to make a film soundtrack. When I heard my music playing in the studio, my skin was completely gone, Phan Manh Quynh recalled.
Musician Phan Manh Quynh described director Victor Vu as the "person who sowed the good predestined" for him in writing the soundtrack. Since receiving director Victor Vu's open words, when the finished product is an OST music for more than 2 months. Phan Manh Quynh said: "Whenever Victor Vu invites, if I am not stuck, I will definitely accept the invitation to accompany you. I really like the feelings of the two brothers. Over the past 20 years, he has created a lot of quality works for Vietnamese cinema. Hopefully in the future, he will continue to create very good and excellent works."
The entire lyrics of "The Promise" are like an inner monologue of the main character - a man with great passion, on an adventure on the journey to find the truth.
