- Major seventh (M7); a span of 11 semitones.
- Minor seventh (m7); 10 semitones.
- Diminished seventh (d7); 9 semitones.
◊ In the C major diatonic scale, B is the seventh:
Examples of Seventh Intervals in Practice
C - D - E - F - G - A - B
◊ Likewise, the M7 in a C major seventh chord is also B:
C - E - G - B
◊ A C dominant seventh chord has the same notes, but with a m7:
C - E - G - B♭
See more on building seventh chords.