leading tone
Noun
Meaning
(music) the seventh note of the diatonic scale
Source: WordNetSynonyms
Hypernyms
Examples
As soon as you find out what a leading tone is, you think, Oh my God.
If the final is approached from below, then the leading tone must be raised in a minor key (Dorian, Hypodorian, Aeolian, Hypoaeolian), but not in Phrygian or Hypophrygian mode.
Jacobs, quoted in Holden, p. 1060 Jacobs also opined that the leading tone that begins "Never mind the why and wherefore" "serves to emphasize the phrase like a Johann Strauss-ian grace-note".
The term leading tone is generally reserved for seventh degrees that are a half step (semitone) away from the tonic, as is the case in the major scale or the harmonic minor scale (and the melodic minor, ascending).