Others may find this mystifying as well...a tune has
1) a key signature (sharps & flats at the beginning of the song),
2) the chord & note symbols that appear on the lead sheet,
3) a concert key sound (the pitches that the listener hears), and
4) my instrument may not be tuned to C.
is there a tutorial on how to understand how BB can be used to modify these parameters...or maybe an article somewhere?