Listen to The Christmas Tree, Op. 21: Waltz online. The Christmas Tree, Op. 21: Waltz is an Instrumental language song and is sung by Boris Khaykin and Bolshoi Theatre Orchestra. The Christmas Tree, Op. 21: Waltz, from the album Winter Dreams, was released in the year 2016. The duration of the song is 4:36. Download Instrumental songs online from JioSaavn.