【New】Perfect Pitch: Everything You Need to Know - 2 CD Set Ideal for children's ear training. Contains everything needed to acquire perfect pitch. An instructional album designed to develop perfect pitch. This CD contains 178 tracks of piano sounds tuned to 12-tone equal temperament, including samples of white keys, black keys, and chords. Just listen, even without a piano. Target age: Approximately 3.5 to 6.5 years old Supervised by Sayuri Nishikiori - Label: Victor The CDs were wrapped in cloth, so I stored them in my own hard case. Ultimately, they were never used. Original price: 3150 yen Thank you for looking.