I have recently become confused about how to name chords in jazz.
This is my current understanding:
Add chords (without 7th)- chord that contains the root, third, (optional 5th) and one or more extensions (eg- CM add 9).
Add chords with 7th- contains root, third, (optional fifth), 7th, and one or more extensions (which are not consecutive- eg CM7 [add] 11)
fully extended chord- root, third,(optional fifth), seventh and then one or more consecutive extensions (G11)
Sus chords- 2nd or 4th with 5th but no 3.
the 6th becomes the 13th whenever the 7th is in the chord (whether the 6th is actually at a lower pitch than the 7th or not).
If the chord contains no 3 but does contain a 7th- the 6th becomes a 13th, but the 2nd and 4th will be sus2 and sus 4 respectively (eg A7 sus4 flat 9).
If one of the extensions is altered, it is specified, even if it is a consecutive extension (G11 [add] flat 13).
a chord contains a root and a couple of upper extensions, but no 3rd, 5th or 7th? Eg (C, D, F) Is this a 'C11 sound'?
a chord contains no 3, but a root, 7th, 9th and 11th? (is this going to be C7 sus2 sus4? Or will it be called a (more complete) 'C11 sound'?
*Do you need a 5th for it to be sus? And if you have both the 2nd and 4th, do they immediately become upper numbers, regardless of the other notes in the chord ?
When learning about slash chords, I have seen certain (incomplete) chords referred to as 'sounds'. E/G I have seen referred to as a G13flat9 'sound'- but surely the presence of the third and the lack of 7th would mean this is simply a G-6 (add) flat9?
If i have: root, flat 5, flat6 (no 3)- what would this be called?
If I have: root, 5th, 2nd, 4th- (C sus2 sus 4- or CM11 sound?)
Diminished and half diminished:
C half dim with an 11th- C-7flat 5 add 11?
C half dim with a 9th- C-9 flat 5?
C dim triad with a flat 13th- Cdim add flat 13? Or Cdim flat 6 (as there is no 7)?
There is a lot to address here, so I understand if each point is not addressed directly. I'd simply be happy and grateful to be linked to any illuminating resources! thanks.