Music is an art form and cultural activity, and its medium is sound waves (a kind of mechanical waves) organized according to time and law.

Its basic elements include strength, tonality, duration and timbre. These basic elements combine with each other to form the common "formal elements" of music, such as rhythm, melody, harmony, strength, speed, debugging, form and texture.

The following is an introduction to music:

The formal elements of music are the means of expression of music. Different types of music may emphasize or ignore some elements. Music is played through various musical instruments and vocal techniques, which are divided into instrumental music, vocal music (such as songs without musical instruments) and works combining singing with musical instruments.

In the most general form, music is described as an art form or cultural activity, including the creation, performance, evaluation, music history research and music teaching of music works.