chuck3 said:While I respect your expertise, I would limit what you say to fretted bass guitar. Once you're on upright, and to some extent fretless bass guitar, the open strings you hit as you go help with your intonation. So playing in Ab on upright bass is not "equal," in my view, to playing in A or Bb on upright bass. The latter two keys let you pass through open strings at will, while Ab generally does not.
If you use frets, sure.
I totally agree. I assumed that this was a BG discussion. UR is a totally different beast.