This method is aimed at everybody who wants to learn to play the keyboard, in lessons or self-study, in methodological teaching units with the help of popular songs and useful information: at beginners of every age, but also at wind players, singers or guitarists who wish to become musical 'insiders' and look for a method to approach improvisation, composition, harmony, etc. through keyboard playing. It is especially on the keyboard with its clear, regular layout that scales, chords and harmonic progressions can be shown in a clearer and more systematic way than on any other instrument. Musicians with previous knowledge can start with volume 2 or 3. Volume 3: Seven new chords which can easily and certainly be learnt due to the previous slow increase in difficulty and the increased use of the left hand for independent accompaniments help to prepare for polyphonic playing with both hands. Playing with two hands and with a number of new rhythmic structures which have all been taken from well-known melodies make music-making and learning in this volume a great experience. The knowledge of intervals, exercises for the quick recognition of the intervals, and transposing form the basis of the introduction to harmony provided for in volume 4.