What is the instrument at the beginning of the Waltz of the Voice of Spring?

The Waltz of Spring begins with cello, oboe, flute and clarinet.

Waltz of the Voice of Spring is an immortal masterpiece of the famous Austrian musician johann strauss II.

Music function:

As a waltz, this song is very different from the author's other waltzes: it is not a typical Viennese waltz, nor is it created as dance accompaniment music. It is a musical program performed on the stage and has the nature of pure musical performance. The rhythm is free, full of changes, the melody is vivid and coherent, and it has a strong appreciation. It is rarely used for dancing, and there are no paragraphs in the original score. In addition, this song also has the characteristics of Rondo. It has a theme of Rondo repeated many times, which runs through the whole song. The theme is presented after a brief and warm introduction, and the gorgeous and agile melody is like the breath of spring, full of youthful vitality. The whole song is highly artistic, appealing to both refined and popular tastes and enduring. The song vividly depicts the spring back to the earth, the melting of snow and ice, a vibrant scene, like a colorful oil painting, forever maintaining the spring scenery of nature.