PURPOSE: To enable efficient training with presentation of questions with the training controller which raises the absolute sound sensation of musical tones, stores performance of musical pieces and executes training in accordance with the presentation of the various questions.

CONSTITUTION: The questions for the musical tones of the respective measures of the musical pieces stored in a performance memory including the questions presented in the past are presented while the number of the measures is successively increased as shown by (b) → (d) ζ (f) when correct answers continue. The number of the measures is not increased as shown by (b) → (c) or (d) →(e) in the case of an incorrect answer. Then, the training is progressed while the performance of the musical tones of the same measure is trained many times. The memory power to the performance of the musical piece is correspondingly effectively improved. This controller is also applied to the presentation of the questions for random musical tones of pure tone units in order to raise the absolute sound sensation.