an educational keyboard with removable keys , wherein musical tone generation for a given key is in response to correct placement of the key in its corresponding key slot , is disclosed . incorrect placement results in a sour tone . lights are also used to indicate correct and incorrect placement of keys . a computer interface for the keyboard allows a student to use pre - programmed interactive lessons tailored to the student &# 39 ; s age and ability . methods of teaching music theory and harmony with the keyboard utilize the student &# 39 ; s left brain and right brain capabilities .