Chord · 6ths & Adds

B♭add♯11 — B♭ Added ♯11

B♭add♯11 is the B♭ added ♯11 chord. It is built on the root B♭ with major 3rd (D), perfect 5th (F) and augmented 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♭add♯11.

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

On the keyboard

B♭add♯11 on the piano keyboard: B♭ D F EB♭DFE

The notes of B♭add♯11

DegreeNoteInterval from the rootPitch
1B♭rootB♭3
3Dmajor 3rdD4
5Fperfect 5thF4
♯11Eaugmented 11thE5

Other 6ths & adds on B♭

B♭6B♭m6B♭6/9B♭m6/9B♭add2B♭add4B♭add9B♭add11B♭6sus4B♭m(add9)B♭m(add11)B♭6/9♯11B♭add9♯11B♭m6/7B♭m6/9/7B♭m6/11B♭m6♯11B♭m6/9/11B♭m6/9♯11

Added ♯11 chords on every root

Cadd♯11D♭add♯11Dadd♯11E♭add♯11Eadd♯11Fadd♯11F♯add♯11Gadd♯11A♭add♯11Aadd♯11Badd♯11

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