Listen to Swan Lake, Op. 20, Act 2: X. Moderato online. Swan Lake, Op. 20, Act 2: X. Moderato is an English language song and is sung by André Previn and London Symphony Orchestra. Swan Lake, Op. 20, Act 2: X. Moderato, from the album Favorite Film Music [International Version] (International Version), was released in the year 2011. The duration of the song is 2:47. Download English songs online from JioSaavn.