The prelude to Spring Dawn has four eight beats

Music is an art form and cultural activity, and its medium is timely organized and regular sound waves (a part of mechanical waves) kind). Its basic elements include strength, tonality, duration, timbre, etc. These basic elements are combined with each other to form the commonly used "formal elements" of music, such as rhythm, melody, harmony, intensity, speed, mode, musical form, texture, etc. The formal elements that constitute music are the means of expression 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.