Her name is Tamu, or Murata Tamu. She is currently the drummer of Nemophila, but do lots of other stuff. I have seen her playing in lots of constellations with several musicians.
Is it a complete waste of time to praise you for your hard work and dedication to your passion? Will you ever bother to translate this and set up a drum-off between yourself and Junna? Oh, the awesome spectacle that would be!