I’m reading the jazz piano book and I can’t see how the upper c flat note has a place in the C7+9 chord.
The ninth note on the C major scale is a d so +9 would be d# not c flat = b
Or am I wrong?
Pretty poor writing! If the dots had stems, it would be more clear, as that top note actually belongs to the bass clef, making it Eb. Even though it could be construed as looking like it's part of the treble clef, which would make it Cb, and utter rubbish!
But that's still wrong! C7+9 has an augmented 9th note. That's D#, not Eb, even though it's enharmonic.
C7+9 contains the notes C E G Bb and D#. Although here the 5 (G) has been left out, which is not uncommon.
First, it's an Eb. It's in bass clef.
Which answere the question. But we might as well also answer the question some people THOUGHT you asked: 'Why spell a #9 note as a flattened note?'
I'd reverse that to 'Why do theorists insist in calling a 'b10' a '#9'?' We hear it as a 'blue' flattened third on top of a dominant 7th shape chord. They allow other exceptions to the 'every chord must be analysed as a pile of thirds' rule. But there it is. Levine has used the 'correct' chord symbol, but has notated what he hears.