On Jun 10, 2009, at 6:30 AM, dhbailey wrote:
Carl Dershem wrote:
A triangle over a straight line is easy to mistake in the usually
bad light on a bandstand.
cd
It's also easy to mistake a triangle for a circle in dim light, if
the suffixes aren't fairly large.
It's so much clearer to use Maj7, minMaj7, Dim (for full
diminished), m7b5 (for half-diminished).
But of course, what some might think is clearer is irrelevant when
a person is asking how to change things.
Thanks for providing the how-to on that issue, Carl.
While I mostly agree with you, I would have to go with dim7 for a
fully diminished chord, as dim alone would mean a triad. Same goes
for circle versus circle7.
In a common-practice jazz situation most players would automatically
play a fully-diminished seventh chord when confronted with "dim", but
often in pop material that isn't appropriate, or may even introduce a
bum note.
Another advantage of the alpha-numeric system is the suffixes can be
easily typed with ASCII characters, say in an email or a Word
document. That doesn't seem to bother Darcy, though, who has the
geometric system completely under control and has selected nice
pointy triangles and thick dashes so they don't get confused in dim
light, like you can with the JazzCord versions of those symbols.
The main disadvantage of the alpha-numeric system is the suffixes can
get a little long at times. Compare a slashed circle to m7(b5) in
terms of real estate, for example. Sometimes the essential quality
can get confused, too, say with m7(b13 11 b5) (stacked, of course)
you may miss the b5 in one glance. Slashed-circle (b13 11) is
instantly more clear.
Christopher
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