Piano Forum
Piano Board => Student's Corner => Topic started by: popcornn on February 02, 2012, 09:31:49 PM
-
Hi,
If for example on the tonic of C I have a 13th Chord, is the 7th B or Bflat (Major or Dom7th?)
So a 13 Chord on C would be:
C, E, G, B, D, F, A
or
C, E, G, Bflat, D, F, A
How would the symbol for these be witten, C -7 13? (for a dom 7th 13th) I'm confused.
Thanks everone.
p.s. If you can, what would Am13th Chord be?
A,C,E,G,B,D ????
Thanks again.
-
its a flat.
Typically when its a 13th chord its dominant, so in C the 7th is Bb. If it were a Major 7th tonality it would be expressed as a 6. Notice the 6th and 13th are the same note?
-
They just write C7 for a dominant seventh. C -7 looks like C-7, c minor seven.
Just think of it all on a major scale, esp for the extended part of the chord. It's really just a major 3rd, unless it's marked minor. Dominant, unless marked major or minor. Fifth is the same, a fifth, unless it's altered. And the 9th, 11th, 13th are from the major scale until they're altered.
a c e g b d f#
I'm not an expert on extended chords, but I did read that you're supposed to avoid minor ninths because of the clash. So between the fifth and thirteenth, you end up with a M9 too instead of a m9 (clash). [And if you go up to 15th chords (which I haven't really heard of but they fit the hand well) you end up with a clash either way on some of the chords.]
I know how to create them, extended chords. What I'm less familiar with is which ones are more common and the voicings for them. And if the extended notes -- 9, 11, 13 -- really have to be at the 9th, 11th, and 13th or whether it's still a 13th if you make a M6 chord. And if you have to have all the 'filler' notes if it's an extended chord or not, like a 13th spelled C E G Bb A vs. C E G Bb D F A.
I've got a few threads on this if you want to search for them. Probably on the student board or theory board.
-
It seems that the convention is to call the note 13 on dominant chords and 6 on major or minor chords. So you probably won't see a "minor 13th" chord. One option maybe for C13 would be to stack fourths around middle C like Bb-E-A (or with both hands, Bb-E-A-D-G-C). That's a very cheap trick jazzy sound that I like quite a bit.