Normal or Charged Attacks grant a Harmonic on hits. Gaining 5 Harmonics triggers the power of music and deals 100/125/150/175/200% ATK DMG to surrounding enemies. Harmonics last up to 30s, and a maximum of 1 can be gained every 0.5s.
In Game Description
Beneath its rusty exterior is a lavishly decorated thin blade. It swings as swiftly as the wind.
How to Get The Flute ?
Obtainable from gacha.
Here’s all material used to upgrade The Flute: