A composer is a person who creates music, often by writing down notes and arranging them for various instruments or voices. Composers can work in many genres, including classical, jazz, and popular music. They may use software or traditional notation to develop their pieces, which can be performed by musicians or orchestras. Throughout history, famous composers like Ludwig van Beethoven and Wolfgang Amadeus Mozart have made significant contributions to music. Composers often collaborate with performers and conductors to bring their works to life, and their compositions can be recorded for wider audiences to enjoy.