It is a simple piano practice game for children.

Using a MIDI piano keyboard or the computer keyboard the player starts hitting falling capsules with two fingers at first and at slow speed.

Gradually, progressing through the levels adding the use of one finger at a time, ends up playing piano with ten fingers.

The more advanced levels are more demanding and fast.

Between some levels the player takes a break with some entry level music theory.

The final goal is to reach the level of Pythagoras "Harmony of the spheres".

Beyond that is the continuous improvement in piano playing.