Editing Tritone (section)

=== Occurrences in diatonic scales ===
The augmented fourth (A4) occurs naturally between the fourth and seventh scale degrees of the [[major scale]] (for example, from F to B in the key of [[C major]]). It is also present in the natural [[minor scale]] as the interval formed between the second and sixth scale degrees (for example, from D to A{{Music|flat}} in the key of [[C minor]]). The melodic minor scale, having two forms, presents a tritone in different locations when ascending and descending (when the scale ascends, the tritone appears between the third and sixth scale degrees and the fourth and seventh scale degrees, and when the scale descends, the tritone appears between the second and sixth scale degrees). [[Supertonic]] chords using the notes from the natural minor mode thus contain a tritone, regardless of inversion. Containing tritones, these scales are [[Anhemitonic scale|tritonic]].