A Music Theorist is a professional who studies the structure and elements of music. They analyze aspects such as melody, harmony, rhythm, and form to understand how music works. This knowledge helps them explain how different musical styles and genres are created and how they can evoke emotions. Music theorists often use various tools and methods, including notation and analysis, to explore compositions. They may also teach music theory in educational settings, contributing to the understanding of music history and the works of composers like Johann Sebastian Bach or Ludwig van Beethoven.