In The Man Who Knew Too Much, music serves as the connecting piece between mother and son and is capable of healing a bond as strong as that one. Early in the film, the audience hears Jo and Hank sing “Que Sera Sera” in a tender moment of joyous connection. This scene reveals the pure relationship those two share and presents a clear picture of the loving dynamic they have with each other. They bounce off each other making the song a shared product; it takes both voices to make the complete sound, and Hank was eager to have his mother join in with him. This is also a lengthy scene where the camera follows Hank and Jo as they sing to the end of the song. By keeping such a focus on the two, the camera forces the audience to recognize the relevance of the song and not overlook it as just a trivial moment in the film.

This song, however, is only in the film twice and does not return until one of the ending scenes: the reconnection of mother and son. Not only does it appear in the soundtrack as a bookend, it once again requires contributions from both Hank and Jo and is what ultimately leads to Hank’s safe retrieval. Each note of “Que Sera Sera” serves as a breadcrumb leading Ben to his son. Music holds the power to connect a family and help them escape danger, something they had not yet been able to do without it. Hitchcock’s use of music as a strong force of connection speaks to the value of music in the film and the power it yields. Another example is music’s expected ability to mask the sound of a gunshot (exactly what the gunman intended to use as a silencer). Music has the ability to alter the narrative relying solely on its volume, timing, and tempo.