てっぺい先生 

Niconico nickname for [[real life|professional]] violinist Okada Teppei. 

h4.See also 

* Nicopedia article: http://dic.nicovideo.jp/id/4359376 
* Okada's Nico Nico community: http://com.nicovideo.jp/community/co331122 
* Wikipedia(JP): "Sugi-chan & Teppei,":http://ja.wikipedia.org/wiki/%E6%9D%89%E3%81%A1%E3%82%83%E3%82%93%26%E9%89%84%E5%B9%B3 a classical music duo composed of Okada and Sugiura Tetsurou, a pianist
teppei-sensei (violinist)