Altered

Dominant seventh, flat thirteen chords

Dominant 7 with b13: C-E-G-Bb-Ab. Formula: 1-3-5-b7-b13. From altered scale or harmonic minor V.

In every key

The same shape, moved. The symbols below are spelled the way the app spells them, which is the spelling the chord's own scale asks for rather than whichever accidental is easier to type.

  • C7b13
  • Db7b13
  • D7b13
  • Eb7b13
  • E7b13
  • F7b13
  • F#7b13
  • G7b13
  • Ab7b13
  • A7b13
  • Bb7b13
  • B7b13

Voicings

Written in C, because that is the key the encyclopedia authors them in; every one transposes unchanged.

Rootless (3-5-b7-b13)

E · G · Bb · Ab

advanced

Rootless (b7-9-3-b13)

Bb · D · E · Ab

advanced

Fred Hersch tender altered color

Drop-2

C · E · Bb · Ab

intermediate

Octaves shown are the app's default ascending voicing.

Where it turns up

Strong V7 of minor. Resolves down to im7. Fred Hersch / chamber jazz color.

Commonly swapped with

  • C7alt
  • C7#5
  • C7