Interval between a pitch and another six diatonic steps apart. A semitone less than an octave is a major seventh; a semitone less than that a minor seventh. Both are strongly dissonant intervals, the major seventh pulling to resolve upward, the minor seventh to resolve down. See also seventh chord .
a unit used in music to describe the ratio in frequency between notes. Two notes differ by one seventh if the higher note has frequency exactly 15/8 times the frequency of the lower one. On the standard 12-tone scale, the seventh is approximated as 11 half steps, corresponding to a frequency ratio of 211/12 = 1.8877.
The seventh degree of the diatonic scale. Also, the interval formed by a given tone and the seventh tone above or below it, e.g. c up to b, or c down to d. Intervals of the seventh may be major, minor, diminished, or augmented.