음악 (music) is an art form that uses sound to express emotions, ideas, and stories. It is created by combining various elements such as melody, harmony, rhythm, and timbre. Music can be performed using instruments, voices, or a combination of both. It exists in many genres, including classical, jazz, rock, and pop, each with its own unique characteristics. Throughout history, music has played a significant role in cultures around the world. It is often used in celebrations, rituals, and entertainment. Music can also influence mood and behavior, making it a powerful tool for communication and connection among people.