From the very first piano lesson the teacher may and indeed should make music with his or her pupils. For the pupil, playing duets is - in most cases - the first encounter with the diverse forms of ensemble playing. Duet-playing is of such significant educational value that it should be nurtured continuously at all levels of piano study. As a result, rhythmic precision, a sense of tonal colour and expression, feel for texture, for melody and accompaniment, can be achieved with ease. The secondo parts are written so that they can also played by (more advanced) pupils. All the pieces are therefore suitable for group teaching.