Chord · 13ths

B♭13 — B♭ Dominant 13th

B♭13 is the B♭ dominant 13th chord. It is built on the root B♭ with major 3rd (D), perfect 5th (F), minor 7th (A♭), major 9th (C) and major 13th (G) above it — the formula 1 3 5 ♭7 9 13, sounding the notes B♭ D F A♭ C G. On the piano it sits at Bb (octave 3) and above in the library's voicing; the same 6 notes in any octave are still B♭13.

Root
B♭
Quality
Dominant 13th
Formula
1 3 5 ♭7 9 13
Notes
B♭ D F A♭ C G

On the keyboard

B♭13 on the piano keyboard: B♭ D F A♭ C GB♭DFA♭CG

The notes of B♭13

DegreeNoteInterval from the rootPitch
1B♭rootB♭3
3Dmajor 3rdD4
5Fperfect 5thF4
♭7A♭minor 7thA♭4
9Cmajor 9thC5
13Gmajor 13thG5

Other 13ths on B♭

B♭maj13B♭m13B♭13sus4B♭13♭5

Dominant 13th chords on every root

C13D♭13D13E♭13E13F13F♯13G13A♭13A13B13

Part of the chord reference. See also the scales and the keys.