"Blue Danube Waltz" consists of a prelude, five waltzes and an ending.

Prelude: The music starts slowly in the key of A major, just like the dawn breaking through the mist on the river, awakening the sleeping earth, and stirring up the waves of the Danube River. It is coherent, graceful, lively and light, symbolizing the arrival of dawn.

The First Waltz: Describes the scene of people dancing along the Danube River, intoxicated by nature. Theme A is lyrical and clear, while Theme B is light and lively, making people feel that spring is coming.

The Second Little Waltz: It describes the girls dancing happily under the Alps, with moving colors. The melody in D major jumps and rises, advances layer by layer, is lively and lively, giving people a feeling of vitality; after switching to B flat major, it is graceful and euphemistic, in sharp contrast to the former.

The Third Little Waltz: It is a singing melody, presenting a carnival dance scene. Theme A is graceful, elegant, dignified and steady, while theme B is fluid, enhancing the danceability and giving people a cordial and novel feeling.

Small Waltz No. 4: Theme A is beautiful and full of singing, while Theme B emphasizes the dance rhythm and is passionate and unrestrained.

Small Waltz No. 5: The melody of Theme A is undulating, soft and tender, while Theme B is fiery and joyful, forming the climax of the whole piece.

Ending: divided into two types, one is a choral ending, which follows the fifth minor waltz and ends quickly in a warm atmosphere; the other is an orchestral ending, which reproduces the third minor in turn. The waltz, the fourth minor waltz and the first minor waltz theme finally ended in a stormy carnival atmosphere.

The Blue Danube is the most famous waltz work by Austrian composer Johann Strauss the Younger. Known as "Austria's second national anthem". The piece is also performed as part of the repertoire at the Vienna New Year's Concert every year.