
To jump, strum the wire top-down.
Maestro! is a musical platformer.
In a platformer – as you may guess – you will probably have to jump. Presto, though, does not jump on his own, he keeps running as hell towards the right end of the screen.
The only thing you can do to help him, is interact with the various things that surround thim.
As he is running on strings, the best thing you can do is strum them. If you strum in a top-down direction, Presto will jump.

In order to fall, strum from the bottom-up.
In a platformer, you will probably, at some point, have to fall.
In order to fall, you will have to strum the wire bottom-up. He will fall from the wire he is walking on. Let us hope their is something safe below!
Do you get the point ?