17 chords (including enharmonic equivalents)
ANATOMY
Major 7th Chord Formula
The 4 scale degrees that form every major 7th chord — in any key.
A major 7th chord is a major triad with a natural 7th stacked on top. That single extra note — sitting just one semitone below the root — gives the chord its hallmark dreamy, jazzy, "floating" quality. It is the same chord as a major triad with one note added, but it sounds dramatically more sophisticated.
Applied to C: C (root) – E (major 3rd) – G (perfect 5th) – B (major 7th). Applied to F: F – A – C – E. Applied to D: D – F# – A – C#.
About Major 7th Chords on Guitar
Major 7th chords are the bridge between simple major triads and full jazz harmony. They keep the bright foundation of a major chord but add an unmistakable smoothness, sweetness, and tonal richness — which is why they appear constantly in jazz, bossa nova, R&B, neo-soul, and lo-fi. Once you can play Cmaj7 and Fmaj7 on guitar, you can re-harmonise countless songs by swapping plain major chords for their major 7th counterparts. The sound is so distinctive that one Cmaj7 will instantly shift a track from "pop" to "jazzy."
- 01Built from 4 notes: root, major 3rd, perfect 5th, major 7th (formula 1 – 3 – 5 – 7)
- 02Dreamy, sweet, jazzy sound — the signature chord of bossa nova and neo-soul
- 03Only one note different from a plain major chord: a major 7th added above the 5th
- 04Written with "maj7", "M7", or "Δ7" (Cmaj7, CM7, CΔ7 — all mean the same chord)
- 05Functions as the I (tonic) or IV (subdominant) in major-key jazz progressions
- 06Cmaj7, Fmaj7, and Gmaj7 are the easiest open voicings — all reachable with the open C major shape modified
- 07The major 7th interval (11 semitones) sits a single half-step below the root — the source of the chord's lush dissonance