Re: Bluesette
John F. Hyde ( (no email) )
Tue, 8 Oct 1996 00:03:59 -0400
>I don't know what B U S means but if you say an upper structure triad, I
>imagine you are talking polytonal ie: Ab triad over a D7. The D7 contains
>the A natural where as in the upper structure (if I understand you
>correctly) the Ab acts as a flat five to the D7. The clash between A
>natural in the lower voicing and Ab in the upper part of the chord creates
>an interesting polychord.
>
Upper structure chords are basically triads over a tritone. So D7usb6 would
be that Bb triad over F# and C. There are 9 available us triads. II, bIII,
#IV, bVI, VI, I-, bII-, bIII-, bIV-. The II, #IV-, #IV, bVI and VI are used
the most. Check out The Jazz Piano book by Mark Levine.
John <jhyde@lightlink.com>