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Originally Posted by bobsguitars09 How should we name outside notes per key? |
Good question. From my position as a non-jazz theorist, I'd say that when the note resolves back into the key, you name it accordingly, though what that means is that you are not really going "outside" the key at all, just playing around on its edges. There is no note in the chromatic scale that cannot be related with any other note considered as the tonic. What you need to know is what the note is supposed to feel like - if you're in C and you play an Ab or a G#, that note wants to go somewhere (whether you the player know it or not). So its name depends on where it wants to tell you it is going - is it a minor 6th or an augmented fifth? Does it want to suggest that the next note (which doesn't actually have to be heard) should be G or A?
As a slightly more practical example, a favoured short-cut improvisation method here seems to be to play an arpeggio twice, first a semitone above or below, then back in the key again. Well, that's just extended ornamentation, a kind of appogiatura, so I would name each note individually by that logic, and I think most of the time, maybe always, you should be able to shift the root up or down and name the other notes in the arpeggio from there. So in F, ornamenting an arpeggio of Bbmaj7 (Bb D F A) by playing it a semitone below first, I would name the "ornament" arpeggio from A (A C# E G#), and coming in from a semitone above, I would name it from Cb (Cb Eb Gb Bb). That avoids name "duplication," the same note name used with different levels of "raisedness," flat, natural or sharp.