Changing the pitch has an impact on the rhythm and melody of the music. ?Simply put, it means to organize sounds of the same length or different lengths according to certain rules, which is called "rhythm". Melody is also called a tune, which is a line of sounds organized together. For a melody, regardless of its pitch, what you get is its rhythm.

Rhythm has no pitch, it reflects the duration and intensity of the notes. In other words, sleep melodies contain rhythm. A melody without rhythm is just a string of single notes, the rhythm is the "skeleton" that connects it, and the rhythm can be independent.

The parts of main-key music

are interdependent, and only one part’s melody has a sense of tune, so we are accustomed to calling it the "main melody". Polyphonic music is music composed of melodies (melodies) with independent meanings that are combined with each other, and all parts have a sense of tune.

In terms of the relationship between sounds, it also corresponds to "harmony" (a concept of simultaneous sounding, which does not refer to the knowledge of "harmony" and "harmony" composition). Harmony is Vertically, the melody is horizontal. For example, a harmonic interval is when two sounds sound at the same time, and what is studied is the auditory sensation produced when two sounds sound at the same time.