Bb7b13: guitar chord voicings, inversions, scales and arpeggios

Bb7b13 (7b13) is an interactive GuitarArcanum page with chord formula, intervals, voicings, inversions, triads, pentatonic patterns, scales and arpeggios on the fretboard.

Chord formula

Interval formula: 1 3 5 b7 9 11 b13. A dominant with a flat 13th — a dark, tense dominant; the b13 sounds like a raised 5th.

Chord tones

The b13 is enharmonic with a #5 and gives a tense, dark color. The perfect 5th is dropped when it's present. Key notes: 3, b7, b13.

Sound character

Dark, tense and altered — close to a whole-tone and altered sound.

Harmonic function

An altered dominant. The b13 strengthens the pull, often toward a minor target.

Typical progressions

  • F7b13 → Cm
  • Cm7b5 – F7b13 – Bbm
  • F7b13 → C

Guitar voicing advice

Don't play the perfect 5th — use the b13 instead. Root on the 5th string, with 3, b7 and b13 on top.

Compatible scales for Bb7b13

Other chord qualities on the Bb root

Compare this chord with other qualities sharing the same root.