Originally posted by ORCHARD LIMEY
No, I respectfully disagree. In my experience, the laziness lies in using the circle, which strictly should mean 1 b3 b5, for circle 7, which strictly should be 1 b3 b5 bb7. The "lazy" use of the circle is what then leads to use of the slashed circle for m7b5. I have never seen anything in a harmony text to suggest that the circle "should" mean a fourth degree. Besides, your schema doesn't seem to leave room for any symbol to be used for 1 b3 b5. "mb5" doesn't strike me as a realistic option--I've read thousands of charts over the last 35 years, and I've hardly ever seen that one, and never in a really well-done chart.
I could of course be wrong--it happened before, just the other day
--but what you say doesn't accord with what I was taught. Of course, as I was given to understand the other day, I am kinda "old school."
Well, I wouldn't go quite
that far...it was one of your notational conventions that was called "old school", if I remember correctly. I feel relatively certain that the person who made that remark never intended it to be taken personally.
I think the confusion about the jazz nomenclature stems from the same problem as in the other thread though - the growing pains of a language in progress. I've not seen "mb5" on any charts, but if that exists, you can bet that it's just a permutation of m7b5 with the 7th chopped off. Back when the original real book came out, all the half diminished chords were called mi7b5, and now it's at least as common to see the circle with the line through it. But before it was even an acknowledged chord, the guys Bud Powell and Monk played with used to call it "that minor 6th chord with the 6th in the bass". As in Fmi6/D = Dmi7b5. So our beloved minor ii-V7-i used to be a iv-V7-i! I remember thinking that I was terribly clever many years ago when I discovered (as a pianist) that I could play a rootless Bb7 voicing in place of a D half-diminished chord. Imagine what a dope I felt like when I discovered that this is how they thought of this chord in the beginning, more than 50 years ago.
But as far as legit theory is concerned, RICHARD III is correct: A diminished triad is notated with a circle only, and a fully diminished 7th chord uses a 7 in addition to the circle (AFAIK, anyway). The subject of jazz nomenclature is an interesting one, though, and one that has caused more than a few personality clashes.
Players of my generation (old school? New school? Middle school?) seem to break chords down into basic categories - like Major, minor, Dominant, Altered Dominant, diminished, etc. - when reading and basically disregard the more specific information given in the chord symbol as only one possibility of how to play it (unless the specifics in the chord symbols pertain to the melody, in which case they are honored until the blowing begins), leaving the "color tones" of each chord up in the air, to be determined by what's going on in the heat of the moment. (Ex. - if I see "G7#9", I might play any of the following: G7#9#5, G7b9#5, G7b9b5, G7b9(13), G7#5, etc....depending on what I'm hearing at that moment). There are other players I run into some times - usually older or younger - who read the exact changes (including all color tones) as gospel each time through, EVEN IF THEY SUCK. This causes much gnashing of teeth on both sides of the issue.
My favorite kind of chord notation is the kind where most of the specifics are left out of the changes, which forces the players to come up with their own interpretations (ex: G-, C7, F, D7, etc.) Then again, some people HATE this kind of notation because it doesn't give enough information. I guess it all just boils down to taste. You say ALUMINIUM, I say ALUMINUM, etc.....