Hi

When I trei to improvize about a piece I have heared, it is in fact the same peace only with one or two swirl about some notes. That is no improvicing.

So how can Iplay more freely? What is important to know? How can I learn it?

(Excuse my English. It isn`t my first language)

you have to study different scale patterns in detail, understand basic chords patterns and hear them.

these scale patterns are other then major and minor we use

(dorian...)

But does it help to know the Dorain Alydicans Frygisch Neopolitisch and so on to improvize on a sheet.

it helps to know every mode. That way you can freely add in every scenario