Four-Voice Shell Extensions
Number of notes: 4
Primary Voicings
Major 7th
Gb3 F4 Bb4 Db5 / 1P 7M 10M 12P
Gb3 Bb3 F4 Ab4 / 1P 3M 7M 9M
Dominant 7th
Gb3 Fb4 Bb4 Eb5 / 1P 7m 10M 13M
Gb3 Bb3 Fb4 Ab4 / 1P 3M 7m 9M
Minor 7th
Gb3 Fb4 Bbb4 Db5 / 1P 7m 10m 12P
Gb3 Bbb3 Fb4 Ab4 / 1P 3m 7m 9M
Minor 7th ♭5
Gb3 Fb4 Bbb4 Dbb5 / 1P 7m 10m 12d
Gb3 Bbb3 Fb4 Gb4 / 1P 3m 7m 8P
Diminished 7th
Gb3 Eb4 Bbb4 Dbb5 / 1P 6M 10m 12d
Gb3 Bbb3 Eb4 Gb4 / 1P 3m 6M 8P
Altered dominant
Gb3 Fb4 Bb4 D5 / 1P 7m 10M 12A
Gb3 Bbb3 Fb4 Abb4 / 1P 3m 7m 9m