"Scherzo à la russe", Op. 1, No. 1, is part of the first published work of Pyotr Ilyich Tchaikovsky, Two Pieces for Piano, Op. 1.
It is based on a Ukrainian folk tune in B-flat major, that the composer had earlier used in his first attempt to write a string quartet. It was first called Capriccio (Italian, "whim") but was later changed to "Scherzo à la russe". The other piece in the work was called "Impromptu" in E-flat major, Op. 1, No. 2.
References
Scherzo à la russe (Tchaikovsky) Wikipedia(Text) CC BY-SA