Battle isn't the only way to make friends. Sometimes, you don't need an instrument of destruction to get someone on your side -- you just need an instrument. Duet Bonding happens any time a pair of people become a little closer because they play music together. This can lead to a new Love Interest, or just help them get to know each other a bit better. The piano is the most often used instrument, probably because the pair needs to sit close together to play. A sub-trope of Let's Duet. See also Love At First Note. Examples of Duet Bonding include: