Neighbours of C7b5
Every chord one voice of C7b5 reaches by a semitone or a whole tone, on C and so for every root: the voice that steps, the notes that result, and what they spell.
C7b5 holds C E Gb Bb. 8 chords are one semitone away and 4 chords are one whole tone away; 12 of them spell a chord type and 0 realise a transform a source names.
One semitone away
| Voice | Steps to | Notes | Spells | Named transform |
|---|---|---|---|---|
| C | B, -1 | B E Gb Bb | Bmaj7sus4 | none named |
| C | C#, +1 | C# E Gb Bb | F#7 | none named |
| E | Eb, -1 | C Eb Gb Bb | Cm7b5, Ebm6 | none named |
| E | F, +1 | C F Gb Bb | F#maj7b5 | none named |
| Gb | F, -1 | C E F Bb | Fmaj7sus4 | none named |
| Gb | G, +1 | C E G Bb | C7 | none named |
| Bb | A, -1 | C E Gb A | F#m7b5, Am6 | none named |
| Bb | B, +1 | C E Gb B | Cmaj7b5 | none named |
One whole tone away
| Voice | Steps to | Notes | Spells | Named transform |
|---|---|---|---|---|
| C | D, +2 | D E Gb Bb | F#aug7 | none named |
| E | D, -2 | C D Gb Bb | Daug7 | none named |
| Gb | G#, +2 | C E G# Bb | Caug7 | none named |
| Bb | Ab, -2 | C E Gb Ab | Abaug7 | none named |
No source this site cites names a transform for this chord type, so every step here stays unnamed.