Chord · 6ths & Adds

B♭add11 — B♭ Added 11th

B♭add11 is the B♭ added 11th chord. It is built on the root B♭ with major 3rd (D), perfect 5th (F) and perfect 11th (E♭) above it — the formula 1 3 5 11, sounding the notes B♭ D F E♭. On the piano it sits at Bb (octave 3) and above in the library's voicing; the same 4 notes in any octave are still B♭add11.

Root
B♭
Quality
Added 11th
Formula
1 3 5 11
Notes
B♭ D F E♭

On the keyboard

B♭add11 on the piano keyboard: B♭ D F E♭B♭DFE♭

The notes of B♭add11

DegreeNoteInterval from the rootPitch
1B♭rootB♭3
3Dmajor 3rdD4
5Fperfect 5thF4
11E♭perfect 11thE♭5

Other 6ths & adds on B♭

B♭6B♭m6B♭6/9B♭m6/9B♭add2B♭add4B♭add9B♭m(add9)B♭m(add11)

Added 11th chords on every root

Cadd11D♭add11Dadd11E♭add11Eadd11Fadd11F♯add11Gadd11A♭add11Aadd11Badd11

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