竹下 勇馬 Yuma Takeshita - FretlessBass,etc
吉良 憲一 Kenichi Kira - DoubleBass,etc
http://nr-ytmusic.tumblr.com/
Take the North exit of Seibu-Ikebukuro line Ekoda station. Turn left, then take the third right. Cafe Flying Teapot is a bit further ahead on the left in the basement of a building.