Pyotr Ilyich Tchaikovsky composed his Pezzo capriccioso, Op. 62, for cello and orchestra in a single week in August 1887. Belying its title, this work is written in the somber key of B minor, the same key as the Symphony No. 6 Pathétique. The Pezzo is not capricious in a lighthearted sense. The capriccioso aspect comes from Tchaikovsky's fanciful treatment of various aspects of the work's simple theme. Despite some rapid passages and a turn to the major key, Tchaikovsky preserves the basic pulse and sober mood throughout the piece.