The major seventh (M7) is a high-tension consonance with a refined, unresolved color. It spans 11 semitones and is central to major seventh harmony and modern tonal language.
Construction and spelling
M7 runs from a note to its seventh letter name, such as C to B, F to E, or G to F#. It belongs to the major/minor interval family. Accurate spelling is crucial because M7 differs strongly in function from m7.
Harmonic and melodic usage
Harmonically, M7 defines the color of major seventh chords and upper extensions. Melodically, it creates a strong leading pull and expressive tension, especially near phrase endings. In voicing, M7 is often treated carefully because of its close semitone relation to the octave.
Examples
- Major seventh chord sonorities in jazz, neo-soul, and film music
- Melodic lines approaching tonic by major seventh motion
- Upper-structure voicings emphasizing bright yet tense color
In practice
Practice M7 against drones and chord pads to control intonation and hear its pull toward resolution. Compare M7 with m7 to internalize the difference in function and color. Strong M7 awareness improves advanced harmony hearing and phrasing decisions.
