Chord sub

[T W Perez]

I like to use 4570 and move it forward and back ie Dm 2355 but is this a valid Em or more like a G6?

[Walter Newton]

Sure 4570 is a "valid" Em...the three string "Jethro" shapes 467x (E), 457x (Em), x467 (B), x457 (Bm) moved up and down the neck are very useful.