Name of the part of Wadaiko

Name of the part of Wadaiko

Generally speaking we call Japanese Traditional Drum as TAIKO.
However we have many types of Taiko historically,
when we call some specified Taiko, we put such as
Nagado, Okedo, Yagura, acquiring the bucket letter before
At that time, Taiko changes to a voiced sonant, DAIKO.

Kagami: Means mirror, reflect the mind of Taiko Player. Attention: It is no good to beat UTAKUCHI, if this part get damaged,
the sound will be changed.