This song (i.e., Nutcracker, Op. 71, Act II: No. 14a, Pas de deux) was composed by Pyotr Ilyich Tchaikovsky. The Nutcracker is an 1892 two-act ballet originally choreographed by Marius Petipa and Lev Ivanov.
Pyotr Ilych Tchaikovsky is the most famous Russian composer of the 19th Century, although that acclaim didn’t come all at once. As with many composers who went unlauded in their own lifetimes, audience appreciation of Tchaikovsky’s works grew over an expanse of time.
A grand pas de deux is a structured pas de deux that typically has five parts, consisting of an entrée (introduction), an adagio, two variations (a solo for each dancer), and a coda (conclusion).[1] It is effectively a suite of dances that share a common theme, often symbolic of a love story or the partnership inherent in love, with the dancers portraying expressions of affectionate feelings and thoughts between romantic partners. It is often considered to be the pièce de résistance and bravura highlight of a ballet and is usually performed by a leading pair of principal dancers.