Bb 13th chord
Bb13 chord for piano presented by keyboard diagrams.
Explanation: The B flat thirteenth is a seven-note chord. Due to practical circumstances, some notes (as a suggestion fifth, ninth, and eleventh) are omitted and the chord is played inverted. The chord is often abbreviated as Bb13.
Omissions: Bb13(no3): Bb - F - Ab - C - Eb - G; Bb13(no5): Bb - D - Ab - C - Eb - G.
Theory: The Bb thirteenth chord is constructed by adding a third to an eleventh chord.
Bb13
Notes: Bb - D - F - Ab - C - Eb - G
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One of many possible inversions (with the 5th and the 11th omitted)
Bb13 inverted
One of many possible inversions (with the 5th and the 11th omitted)