Description 1. Tuned at 442Hz There is a standard pitch in the musical interval. The international standard is 440Hz. The current mainstream standard (the standard for tuning a piano in a hall, the standard for a CD to be used for karaoke, etc.) is 442Hz. Korean ocarinas are tuned at a higher (445 - 446Hz) standard pitch. NIGHT by Noble is tuned at 442Hz, which is the mainstream standard. As a result, it is possible to perform in concerts with groups members using ocarinas from other manufacturers and play the ocarina with accompaniment CDs and instruments without feeling off. Features & details This is a plastic ocarina that maintains high-level pitch accuracy. It has quality that allows you to enjoy playing the ocarina at a high level. Alto C / Color: Black, Rubber Finish Size: 1.7 x 6.1 x 3.9 (inch) Weight: 0.33 lb Customer reviews: 4.6 / 5 stars