Music theory basics · updated 2026-08-16

PITCH

How high or low a note sounds, set by the frequency of the vibration behind it. Concert A above middle C is standardised at 440 Hz.

Close-up of handwritten sheet music and a pencil on a piano music desk

SOURCES AND CITATIONS

Free, primary references for pitch — standards bodies, manufacturers, government offices and university course material.

RELATED TERMS IN MUSIC THEORY BASICS

Back to the full music glossary or read our latest articles.