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This sculpture embodies the head.

While I eating potato crisps, I question about the structure of head. 

And the echoing sound inside of my body, but also sounded by chewing (outside)

I wanted to re-set the boundary of the body. 

How it communicate inside-out.

Distinguish between the inside and the outside while the instrument is played inside
People can listen to music with only one ear
This experience separates our ears and uses the viewer's head as a echo
It allows you to appreciate both internal and external sounds at the same time
Several relationships are formed in this process