The difference between polka and waltz is explained as follows

Polka is usually in 2/2 time, short and concise, with bright melody, shorter than waltz, and the playing time is usually between 3 and 4 Minutes (waltzes usually last 8 to 10 or even nearly 12 minutes, and marches have a stronger melody than polkas). According to the style, they can be divided into: polka, fast polka, polka mazurka (that is, the "Mazurka-style polka" that combines the Polish mazurka style. ) and France is Polka. Waltz is a foreign music genre, so it is sometimes transliterated into English as "waltz". Dance music generally originated in rural areas. The waltz developed with the development of society in cities, especially in Vienna. Therefore, some waltzes are also called Vienna waltzes. Tracing back to its roots, the predecessor of the waltz is the Austrian folk "Landerer Dance", which is also a rural dance music. Waltz is a three-beat dance developed on the basis of "Landler Dance". During the dance, pairs of male and female partners rotate and make circles according to the rhythm of the dance music. The movements are brisk and graceful, and the mood is warm and cheerful. These characteristics determine the genre characteristics of the waltz: faster speed, beat or beat. These characteristics, combined with the tones rotating around the fulcrum sound, vividly produce a sense of rotating and circular movements. The genre characteristics of waltz are more clearly reflected in its accompaniment patterns.