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.