Musical Life has unique materials; The director's skill is extraordinary. With the director's delicate and precise cross-editing technique, the young "Ka-Jeng Wong" and the young "Ka-Jeng Wong" echo each other across six years. The strong contrast seems to give the film a magic of time; Very enlightening (comment by Wu Chun of Southern Metropolis Daily).

Musical Life is not a work about how a genius grows up or how to cultivate a genius, but it goes deep into the growth process and heart of a genius and digs out the unknown side. The beauty of the film lies in that it doesn't simply adopt the narrative method of time or space in general documentaries, but draws lessons from the narrative skills of feature films, takes Ka-Jeng Wong's inner changes as the main line, and constantly forms contrasting details, and comprehensively connects the seemingly fragmented moments of life together to form a climax film. Life in Music is not so much a growth film about genius as an inner growth play about a proud and paranoid teenager. The brilliance of Zhang Jingwei, the director, lies in slowly stretching the theme and fragments of the documentary film that was tracked and produced before, and finally ending in Ka-Jeng Wong's direct questioning of his father, plus his reference to the ending lens of Truffaut's masterpiece Four Hundred Strikes, leaving the audience to ponder (Oriental Morning Post review).

Although Musical Life is a documentary, its sensational index is no less than that of a drama (commented by Information Times). The theme of piano boy is very attractive to the audience. The structure is well-defined, showing the devastation of Hong Kong's middle-class values, and the lonely and rebellious mind of the musical genius is amazing (commented by the Hong Kong Film Critics Association).