have a small text feature for instance below the presets that will explain how and why the various tracks work, and what the idea was when creating them.

Simply put a small body of text that will give a bit of information about the various themes, how they work and why. Some themes sounds like just noise - which I suppose they are, as they are 'simple' frequences - and it would be nice to know why it is they work. And how. It doesn't even have to be something elaborate, just a bit of 'splaining :)