 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 tritonic.