Tonalality is the musical quality of a sound or note, which is determined by a combination of factors such as ACCENT, INFLECTION, PITCH, and KEY. ACCENT refers to the emphasis given to certain notes or beats in a piece of music. INFLECTION is the variation in PITCH or volume of a note or phrase. PITCH is the highness or lowness of a sound, which is determined by the frequency of the sound waves. Finally, KEY is the tonal center of a piece of music, which is determined by the scale and chords used.