ABSTRACT
This chapter deals with some metrics in music, and includes the definition of tempo and note, and the representation of a note in time and frequency, as a paradigm for the staff. The cerebellum is probably the responsible for this accuracy, because it is believed to keep track of the time during the daily lives of the people. It is able to remember the settings used to synchronization to a certain music, as it is being heard, and can recall those settings when the song is sung from memory. The syncopation is an off-the-beat accent, a temporary displacement of the regular metrical accent in music that is typically caused by stressing the weak beat. If a tone stretches in time, therefore increasing its duration, it shrinks in terms of frequency, thus decreasing its bandwidth, and vice versa. An octave is a musical interval between two pitches in which the upper pitch vibrates twice as fast as the lower.
