Listen to Swan Lake, Op. 20, Act I: Valse online. Swan Lake, Op. 20, Act I: Valse is an Instrumental language song and is sung by Evgeny Svetlanov and Ussr State Symphony Orchestra. Swan Lake, Op. 20, Act I: Valse, from the album Tchaikovsky: Swan Lake. Highlights, was released in the year 2006. The duration of the song is 7:27. Download Instrumental songs online from JioSaavn.