Y-ziku (Nico Nico account name) or yaxis221 (YouTube account name) is a Japanese creator who has been famous for his Recorder Performance Robot, RePRo for short, which is a robot that can perform the recorder automated via MIDI. He has posted several videos which show RePRo's performances of popular songs by vocaloids and other artists at Nico Nico Douga and YouTube. The most popular video "Kimi no Shiranai Monogatari" (originally created by supercell) has been viewed more than 500,000 times at Nico Nico as of now.
"Kimi no Shiranai Monogatari"
Source: Nikkan Vocaloid Guide
Miku figure with a recorder photo via Nayuta no Kibou