ABSTRACT
The intervals occur between a variety of scale degrees. For example, the dominant-to-tonic chord relationship frequently occurs from a weak to a strong beat. The root in each of those chords creates the melodic interval of a perfect 4th. Many melodies begin with this interval as an “anacrusis” or pick-up note from scale degree 5 ascending to scale degree 1. An opening “motive” that repeats in the pick-up to measure five, a diatonic step higher than the beginning is known as a melodic sequence. This chapter presents the number patterns representing diatonic scale degrees. These patterns feature the intervals of a perfect 4th and the augmented 4th. The augmented 4th occurs from scale degree 4 ascending to scale degree 7 (the leading tone). It is also called the “tritone” since it is constructed of three whole steps.
