This robot reproduces human lips, lungs, neck, arms, fingers, tonguing and vibrato.

See the movie of the WF-4R playing Flight Of The Bumblebee Codec: MPEG1 Muxed, Size: 16.7 MB, Duration: 1'40"

Some intonation and tuning needs sorting out, but really, this is quite a machine.

The WF-4R is the latest version since the project began in 1990 at Wabot House - Waseda University