Pitch is the perception of the frequency of a sound. High pitch results from quickly oscillating sound waves, low pitch from slowly oscillating waves. Thus, pitch distinguishes high and low sounds. For an instrument to be „in pitch“ means that it produces sounds according to a given frequency; i.e., it is „in tune“. (Notice that instruments can be tuned, whiles voices cannot.)

A musical note is a pitch (a given frequency of sound) with a name and a duration.