Four-Voice Shell Extensions
Number of notes: 4
Primary Voicings
Major 7th
Bb3 A4 D5 F5 / 1P 7M 10M 12P
Bb3 D4 A4 C5 / 1P 3M 7M 9M
Dominant 7th
Bb3 Ab4 D5 G5 / 1P 7m 10M 13M
Bb3 D4 Ab4 C5 / 1P 3M 7m 9M
Minor 7th
Bb3 Ab4 Db5 F5 / 1P 7m 10m 12P
Bb3 Db4 Ab4 C5 / 1P 3m 7m 9M
Minor 7th ♭5
Bb3 Ab4 Db5 Fb5 / 1P 7m 10m 12d
Bb3 Db4 Ab4 Bb4 / 1P 3m 7m 8P
Diminished 7th
Bb3 G4 Db5 Fb5 / 1P 6M 10m 12d
Bb3 Db4 G4 Bb4 / 1P 3m 6M 8P
Altered dominant
Bb3 Ab4 D5 F#5 / 1P 7m 10M 12A
Bb3 Db4 Ab4 Cb5 / 1P 3m 7m 9m