The second volume of Ams Records focuses on Miki's Sanukai-Tohkin, which weaves sounds like telepathy, letting the sounds and vibrations of the ancient earth take over the hearts of the player and listener with it's tones and pitches.

Sanukaito, a sounding stone, is a very rare natural ore that can hardly be found anywhere in the world except in Kagawa Prefecture.

It's tone changes as it is sharpened and polished. It has the same hardness of 7 as quartz, and when struck, it emits a strange sound that has a healing effect through theta waves.

The sound of sanukaito became world famous when it was played at the opening ceremony of the 18th Tokyo Olympics about 50 years ago.