1

I'm playing an Jazz improv for the song Summertime and I'm seeing chords that say A-11, Ab13#11, and I just want to make sure I understand the 13#11 chord.

So, In the key of C, a C13#11 chord would be:


C13#11 has C, E, G, Bb, D, F#.

1, 3, 5, b7, 9, #11


In Jazz the default is b7 so that is why it is flat.

Is this correct?

I did a search and there were some similar questions but I'm in a bit of a hurry so forgive me if this is a duplicate.

1
  • 1
    You left out the 13th, A, in your question but @Aaron included it in his answer. Mar 25, 2021 at 4:23

2 Answers 2

3

(This has to be a duplicate, but I'm not finding it, so...)

Yes. C13#11, as a complete chord, is spelled:

C E G Bb D F# A

In scale-degree terms:

1 3 5 b7 9 #11 13

0

The default 7 in that chord will be ♭7, but not every 7 chord (in jazz or anywhere) will automatically be ♭7.

As Aaron points out, the notes constituting C13♯11 are C E G B♭ D F♯ A. You haven't said what instrument you're playing, but it'll be either piano or guitar. On the latter, there's a problem immediately! 7 notes to play, only 6 strings! The saacrificial note is usually the 5, so that G can go. Then you need to try to voice the other notes, with C underneath, as it's the root, so the whole chord sounds good.

On piano, it's a tad easier, as you can spread out more easily. If the G stays, it doesn't want to be next to the F♯, and similarly the A/B♭.

You could of course consider that chord as a polychord - it's effectively C7 and D major mixed. With another player, it could be played as two separate chords.

1
  • I've got just one note to play (at a time). I play the Trumpet. :-)
    – PatS
    Mar 25, 2021 at 22:05

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.