Cmaj7(#5) Guitar Chord | How To Create and Play the C Major Seventh Sharp Fifth chord

The C major seventh sharp five chord is usually written Cmaj7#5 and uses the notes C, E, G# and B. Melodies over Cmaj7#5 can draw on the C Lydian augmented scale, which contains every note of the chord.

In the symbol, maj7 sets the seventh and #5 alters the fifth. The stack runs major third, major third, minor third, so it is an augmented triad with one minor third on top.

The Ionian #5 scale is the major scale with a raised fifth, the one note that separates it from a plain major scale.

C major 7th with sharp 5th guitar chord is also written as Cmaj7(#5), Cmaj7#5, CM7(#5) or CΔ7(#5).

Notes in the C maj7(#5) chord:

C E G# B

How to create the Major Seventh Sharp Fifth chord:

Formula: 1 3 #5 7

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Created by

Giancarlo Facoetti

Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher

FAQ

What notes are in Cmaj7#5?

Cmaj7#5 (C major seventh sharp five) is spelled C, E, G# and B. That is a root, a major third, a raised fifth and a major seventh. No double accidentals are needed.

How is Cmaj7#5 different from Cmaj7?

Cmaj7 has the perfect fifth G. Cmaj7#5 raises it a semitone to G#, and C, E and B stay the same. That one change turns the triad inside the chord from major into augmented.

What intervals are stacked in C major seventh sharp five?

From C the stack is a major third to E, another major third to G#, and a minor third to B. Two major thirds make an augmented triad, and the final minor third lands on the major seventh.

Which scale fits C major seventh sharp five?

The C Lydian Augmented Scale (C, D, E, F#, G#, A, B) contains all four notes. It is a seven-note scale, so it supplies extra colours beyond the chord itself.