What is overtune?

In every tune, every clap even in every noise exists the whole universe of tunes.
Our mind and ears are used to select tunes from what we hear. So in the fact, every sound is full of overtunes, never mind whether we can distinguish them or not.
Overtune music is a new way, how we can listen to things. I t is a new way to listen to the whole thing, respecting every little tunes in between, even if they are very soft and tender.
This is the basic how to understand overtune music.

Wolfgang von Boyen