Frank,

Bbm#7 = BbmMaj7

A7#5#9#11 = is available in the chord builder

A7#9#11 I can't find in the chord builder. Since the A11 chord is A-C#-E-G-B-D, the sharpening both the 9th and the 11th gives, A-C#-E-G-B#(or C)-D#(or Eb). There are a couple of ways this could be played: namely, Cm or EmMaj7 on an A bass (Cm/A or EmMaj/A).

Personally, the above 7#9#11 chord would most likely sound ok if A7#9 was played and the #11 omitted. My experience is that many of these extended chords have the characteristic extension note(s) in the melody and they are, therefore, not needed in the harmony.

Regards,
Noel


MY SONGS...
Audiophile BIAB 2025