The new year begins with “New Day” (Novyy den’), fully titled Новый день (наша Родина – Революция, ей единственной мы верны): The Revolution is our Motherland, and we are loyal to her alone.

World-famous in Russia, perhaps forgotten or unknown outside. A song with its own Wikipedia pages – Нежность in Russian, Nezhnost in English. It means tenderness, but you may hear it even without knowing.