What is it?

This program trains your absolute pitch skills. Press the 'Start' button and you will hear random played note. Try to guess it by pressing key on piano keyboard. Use mouse or touchscreen for this. Also you can use computer keyboard. Image below shows correspondence between piano keys and keyboard. When you press piano key the light indicator shows the correctness of attempt by red or green glow. Repeat button plays random note again. Screen displaing misses and sets count. After 10 attempts you will see score. Strive to do less misses and your efficiency will grow.