Neighbours of Cmaj7#5
Every chord one voice of Cmaj7#5 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.
Cmaj7#5 holds C E G# B. 6 chords are one semitone away and 8 chords are one whole tone away; 8 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 | C#, +1 | C# E G# B | E6, C#m7 | none named |
| E | Eb, -1 | C Eb G# B | no chord type | none named |
| E | F, +1 | C F G# B | no chord type | none named |
| G# | G, -1 | C E G B | Cmaj7 | none named |
| G# | A, +1 | C E A B | Am(add9) | none named |
| B | Bb, -1 | C E G# Bb | Caug7 | none named |
One whole tone away
| Voice | Steps to | Notes | Spells | Named transform |
|---|---|---|---|---|
| C | Bb, -2 | Bb E G# B | no chord type | none named |
| C | D, +2 | D E G# B | E7 | none named |
| E | D, -2 | C D G# B | no chord type | none named |
| E | F#, +2 | C F# G# B | no chord type | none named |
| G# | Gb, -2 | C E Gb B | Cmaj7b5 | none named |
| G# | A#, +2 | C E A# B | no chord type | none named |
| B | A, -2 | C E G# A | Am(maj7) | none named |
| B | C#, +2 | C E G# C# | C#m(maj7) | none named |
No source this site cites names a transform for this chord type, so every step here stays unnamed.