Triangle (Delta) chord symbol

[pdxdjazz]

Most users here write Δ7 to mean M7 or maj7.
Is the "7" unneeded and redundant? Probably. I just use Δ alone when space is tight.
Does *Δ7 imply the 9th (or 13th) ? Probably not.
Does *Δ9 or *Δ13 imply the major 7th? Usually.
Could using Δ without specifying additional qualities be interpreted somewhat ambiguously like the dominant 7alt ? Probably.
Don't most jazz players modify/substitute/alter chords regardless of what's written...?
(depends on their bandleader... and on who's paying for the work...)

The iReal pro conventions seem to be working for and understood by most users. A common musical language is good to have.

Music evolves. Its language has (and probably will continue to) as well.

This (similar, more lengthy and sometimes less polite) discussion may be of interest:
http://forum.saxontheweb.net/archive...p/t-68108.html

We all have to put up with little pangs of annoyance from time to time.
)BOB

[Bobsax]

Well Bob
You make some interesting comments .

We probably agree it all comes down to the 3rd and 7th.
I remember this argument with David Baker back in the 70's regarding Δ9 .
His response was basically it didn't make that big a difference. Most players would put the 9 in.
It had no real effect on the quality or scale involved.

However , the 6 or 69chord was used when a root was in the melody.
So all you need is the Δ unless you want a 6 (or69) which is really a don't play the Major 7th sign.

I guess I can see the need for the Δ9 if it was an integral part of the harmony or for the play-along feature here.

Thanks Bob for the SOTW link , I'll get to asap
Sax players are so anal.

In the mean time I will continue to chastise the redundant symbol "Δ7"

I guess my suggestion that the next iReal update includes a feature to remove all Δ7's and replace them with just Δ will fall on deaf ears

[Bobsax]

http://forum.saxontheweb.net/archive/index.php/t-68108.html[/url]

We all have to put up with little pangs of annoyance from time to time.
)BOB

OMG!! Those people can talk.
I used to contribute quite a bit but after I hit 1000 posts I thought I'd better get off my butt and do something constructive