B♭13

B♭13 is the bb dominant 13th chord, spelled B♭ – D – F – A♭ – C – G. the tallest dominant — the thirteenth on top gives the resolution a wide, singing edge.

The keys
C4C5C6C7
B♭ – D – F – A♭ – C – G
Practise this chord

Plug in your MIDI keyboard and let Coach Tshepho drill you on B♭13 — it plays the chord, names any wrong notes as you play, and moves you on when you nail it.

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What's inside B♭13
NoteInterval from rootDegree
B♭Root1
DMajor 3rd3
FPerfect 5th5
A♭Minor 7thb7
CMajor 9th9
GMajor 13th13
A working voicing

Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:

HandKeys
Left (shell)B♭2 – A♭3
Right (colour)D5 – C6 – G6
Where B♭13 lives

As the I chord

B♭13 → E♭ → F → B♭13

The classic I–IV–V–I motion with this chord as home.

In a ii–V–I

Cm7 → F7 → B♭13

The strongest cadence in harmony, resolving onto this chord.

Put B♭13 under your fingers

Hear every voicing, see the keys light up, and drill it in the interactive Chord & Voicing Lab.

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Take it further
Build a progression with it → Reharmonize it →
More Bb chords
B♭ B♭m B♭dim B♭aug B♭sus2 B♭sus4 B♭6 B♭m6 B♭7 B♭maj7 B♭m7 B♭m7♭5 B♭dim7 B♭m(maj7) B♭9 B♭maj9 B♭m9 B♭add9 B♭6/9 B♭m11 B♭13 B♭7♭9 B♭7♯9 B♭7♯5
Dominant 13th in every key
C13 C♯13 D13 E♭13 E13 F13 F♯13 G13 A♭13 A13 B13
Play it over a groove
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