Added · A# root / B♭
A#add4 / B♭add4
A major triad with an added 4th. Creates a layered, clustered sound.
Notes in A#add4
A# / Bb is a favourite for horn players and jazz musicians. Many blues and jazz standards are in Bb.
Identify the Chord Quality on A#
Each chord below is played on A#. Listen and identify whether you heard A#add4, A#m, A#7, or another quality — the hardest and most useful ear training skill.
Add 4 in All 12 Keys
Other Chords in A#
Related Added
About the A#add4 Chord
The A#add4 chord is a add 4 chord built on A# (also written B♭add4). It contains the notes Bb, D, Eb, F — the root, third, fifth, and seventh.
A major triad with an added 4th. Creates a layered, clustered sound. Practising the A#add4 chord across different voicings and contexts builds the harmonic recognition that lets you identify it instantly in any musical setting — whether in a band mix, a recording, or a live performance.