A friend of mine (not a guitar player) wrote a song that has a chord with these notes in it: E-F-G-B-D. He called it an Em7b9, and when I saw that I told him that wasn't "right", since to the best of my knowledge a b9 isn't an "accepted" extension of a minor 7th chord. I suggested he rename it G7/E, does anybody have any other possibilities? TIA.
