To last beginner's practice desire for a long time by emphasizing that the result of practice is more improved as compared with user's own expectation.

A CPU 1 sorts a plurality of phrases constituting an etude into groups in each same phrase, whether musical performance corresponding to the phrase of each sorted group reaches a reference level or not is judged, and when the musical performance reaches the reference level, all phrases in the group are recognized as passing phrases. Then the ratio of the number of passing phrases to all phrases is evaluated as the achievement degree of the etude.