During the last 10 years the digital piano has developed from a compact instrument to a favourable alternative of an acoustic piano and became an independent instrument class. Due to the more and more getting closer sound variations and key stroke to a piano, the digital piano has blossomed to a serious option of “Learning to play piano”. The feeling to play have come more and more closer to that of an acoustic piano, it is often played with a keyboard of 88 keys with a copied stroke range.