Watch Fortissimo (2020) Official Trailer

As a newly arrived pianist starts rehearsing, her neighbor starts a sound war that very rapidly brings all the neighbors to their windows. While everyone shouts at each other, the pianist plays till she faints. When the police witness the crowd of hysterical neighbors shouting at each other, they take the side of the pianist, who, after a moment of intense madness, is now playing a serene Mozart piece.