Music is an art form and cultural activity whose medium is sound organized in time.

Its basic elements include the pitch of the sound, the length of the sound, the strength and timbre of the sound. These basic elements are combined with each other to form the commonly used "form elements" of music. Different types of music may emphasize or ignore some of these elements. Music is performed with a variety of instruments and vocal techniques, and is divided into instrumental music, vocal music (such as songs without instrumental accompaniment), and works that combine singing and instruments.