Listen to Swan Lake, Op. 20, Act IV: No. 25, Entr'acte online. Swan Lake, Op. 20, Act IV: No. 25, Entr'acte is an Instrumental language song and is sung by Nadezhda Tolstaya, Evgeny Svetlanov and Ussr State Symphony Orchestra. Swan Lake, Op. 20, Act IV: No. 25, Entr'acte, from the album Tchaikovsky: Ballets, was released in the year 2011. The duration of the song is 1:57. Download Instrumental songs online from JioSaavn.