Sisì , a graceful music box dancer in a tutu, descends from her revolving pedestal to discover if there is other music than what she is used to. Her curiosity will make her discover Ottone's bizarre cellar, a real musical emporium with bunches of notes, rolls of melodies and grains of rhythm, sold after being weighed on a special scale of emotions. But all this is not enough: to make good music you need to know some secrets and know how to put all these elements together and Ottone will reveal it to us!