Pansori - the traditional Korean musical storytelling, which is performed by a singer and a drummer, is the key component in this movie. If I were to describe it, I'd compare it heart that fuels this movie and makes it function - it encompasses the Korean culture during the period when Japanese and Western influences are taking over the Korean peninsula.
This movie isn't a musical but music is everywhere around the three main characters and music, or rather - the continuation of this traditional kind of music - is the main motivator for everything. For one, it's the task to save it; for the second, it's the task to please her father; and for the third - it's the task to convince them that Pansori isn't profitable anymore. Each of them had different views on the music and the music filled them up in a different way, creating this unorthodox father-pupil family tandem. Even though their trio broke up and broke them up emotionally, the chain of events concluded with one of the most powerful musical exhibitions in the cinema I've ever seen. The raw emotional display, the sadness mixed with guilt, pity, and remorse, the closure that is both making the audience cry and making the audience feel immense joy - everything that comes into making this movie has an effect that sincerely moves people. At the very least, it moved me more than anything else recently and I couldn't be happier.