Music is generally defined as the art of arranging sound to create some
combination of form, harmony, melody, rhythm, or otherwise expressive
content. Definitions of music vary depending on culture, though it is an
aspect of all human societies and a cultural universal. While scholars
agree that music is defined by a few specific elements, there is no
consensus on their precise definitions. The creation of music is commonly
divided into musical composition, musical improvisation, and musical
performance, though the topic itself extends into academic disciplines,
criticism, philosophy, and psychology. Music may be performed or
improvised using a vast range of instruments, including the human voice.