Thanks for making a good point.Michael Kiese wrote: 13 Jan 2026 10:08 am
Finally to address what David M. Brown pointed out in this chart: he'd prefer that the Bb9 be written as a Bb9b5. The reason being the melody note of E natural is the b5 of Bb, which is correct. He has a valid point.
Here's my take...this is a gray area of personal preference and music theory.
As a working class musician who went to public school in Hawai'i, I'd prefer that it just be written as a simple Bb7. Bb7 is the V of Em7b5. Everything is just going V to I. Here's my reasoning: Yes, the melody note is E. That said, the melody would be played in a higher octave, especially if a trumpet or sax had the head. So it wouldn't rub against the F of the Bb7.
As a rhythm guitarist, you're mostly chunking the 3rds and 7th anyway. You never know what the piano player will do, but if they're cool, they'll know how to support the melody too.
Furthermore, a Dominant 7 chord is a Dominant 7 chord. Whether it's a plain jane Bb7, or a Bbalt, or a Bb#9#5, or a Bbb9#5... They all function as a dominant 7 chord.
I'd rather read "Bb7" and then as the musician reading the chart, I have the option of coloring the Bb7 however I want. But if you write it as "Bb9b5". THAT is VERY confusing to the eye. For example is it a B with a b9b5, or is it a Bb with a 9 and b5?
That kind of stuff will drive you CRAZY. Keep it simple. Bb7 works, and it's easy to sight read and get right the first time.
There's a lot to be said for keeping the changes as simple as possible.
So I can accept that E natural as a #11 over the Bb7 chord.