Originally posted by David Kaczorowski
Obviously it depends on the context; how you resolve it, etc. Who was it that said," there's no wrong notes, only wrong resolutions?"
I don't know who originally said it, but I first heard it from Kenny Werner at a master class, and he proceeded to show how any note of the chromatic scale could be used at any time if resolved in a way that made sense to the ear. I've been a believer ever since.
But before you can hear how an E natural might work in a C minor progression, you gotta understand it's a C minor progression and E flat is diatonic.
Exactly. Theory can explain it (E over Dmin7b5 implies locrian #2, E over G7 in that progression implies a G7b9(13) sonority, etc...), but it all happens against the backdrop of the resolution that the ear EXPECTS to hear in that situation, and the tension created is often in the context of the substitute sound versus what you EXPECTED to hear. There's not a real solid way to describe that in words, but it's a very real phenomenon.