Could you go into a bit more detail, like what do you mean by adding 9ths and 11ths?
C - E - G - B - D
A polychord. The I & V chords of the Cmaj scale. Play one chord in one hand & the other in the other. You can invert both & come up with various voicings.
C - E - G - B - D - F
Same as the Cmaj9 but with an added 11th, or 4th degree of the scale.
Your second chord is a C in the left hand and a G7 in the right hand
If the seventh is present we name them 9 and 11.
If the 7th is absent we might resort to naming them as
Cadd 9 (add2 ) C-E-G-D
Cadd 4 (add 11).C-E-G-F
If the 3rd were absent we would name them as
These last two formats are ambiguous as they could also be named as
C-D-G D7Sus4 (no 5th) Gsus4 C-F-G Fsus2 G7Sus4 (no 5th)
Last edited by bandcoach; 06-23-2012 at 12:00 AM.
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