Piano World (NL)
'I really want to improvise but I can only play when I read music.' How many times do we hear this utterance from pianists and keyboard players? Anyway, there is now light on the horizon in the form of the especially agreeable collection '4 Hands Free' from the English-Dutch composer Sarah Stiles.

Piano Bulletin, European Piano Teachers Asscociation
It's all about the students daring to improvise (four hands) with each other... With guidance it will lead to some very nice results.

Music and Education(NL)
The book inspires creativity and it can be a good introduction to improvising for both teachers and pupils!

Pyramide
4 Hands Free is an interesting music book for those who want to improvise freely or wish to do so with their pupils.

4 Hands Free
Eight pieces with improvisation, Piano, organ or keyboard duets

4 Hands Free encourages two players to play freely by experimenting with the given material for each piece. The music can be used as a starting point but may go in any direction the players wish. Includes guidelines and musical examples.

It's all about the students daring to improvise (four hands) with each other... With guidance it will lead to some very nice results.
Piano Bulletin (NL) European Piano Teachers Asscociation

The book inspires creativity and it can be a good introduction to improvising for both teachers and pupils!
Music & Education (NL)