I'm just curious If I play a something in the key of A on standard EADGBE tuning and then tune down a whole step to DGCFAD then play the same thing does the key change with the tuning?
If you play it in the same position then yes, the key would change.
changes down a whole step to G.
Concert Key, yes.
If you did that, you would probably be able to use more open strings.
Ok thanks. Thats all I needed to know