Sculptural "noisy instrument" — abstract seashell that fits your ear

Jun Murakoshi's "Noisy Instrument" is a hollow sculpture that fits into your ear and exploits the same dynamics that make the oceanic seashell noises to create a unique set of sounds:

What has not been done by using rapid prototyping technique? My answer is making sounds. It must be difficult to make music but it could be possible to make noise. When you put a seashell on your ear, you can hear something strange noise. It is noise but it makes us feel good. This product is a wearable instrument for listening the noise like seashell makes.

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(via Dvice)