Composers are individuals who create music by writing original pieces or arranging existing works. They use various elements such as melody, harmony, rhythm, and dynamics to express emotions and ideas through sound. Composers can work in different genres, including classical, jazz, and popular music, and often use instruments or digital software to bring their compositions to life. Throughout history, many famous composers, like Ludwig van Beethoven and Wolfgang Amadeus Mozart, have made significant contributions to the world of music. Composers may also collaborate with performers, conductors, and producers to ensure their music is accurately interpreted and presented to audiences.