A way to list which keys are used per individual instrument

[Bentroen]

In song stats, an option could be added to provide a breakdown of individual notes used on each instrument.

e.g. "instrument Harp uses C#3, D3, E#4, F#4..." (every pitch used by the instrument, but removing the duplicates)

This would be useful for people using Notebot (a note block auto-player) to know what note blocks they have to set up, and could in general be an interesting stat to display.