In the Life of Music tells the story of how one song "Champa Battambang," a song made famous by Sinn Sisamouth (the King of Khmer Music), plays a role in the lives of three different generations. It is a feature narrative told in 3 chapters during 3 different decades, depicting the lives of people whose world is inevitably transformed by the emergence of the Khmer Rouge Regime. It is a powerful intergenerational tale that weaves through 37 years of Cambodia's ever-changing landscape.