"The Tsar's Bride" is a Russian opera composed by Nikolai Rimsky-Korsakov. It premiered in 1899 and is based on a play by Lev Mei. The story is set in the 16th century and revolves around the love triangle between Tsar Ivan the Terrible, his intended bride Marfa, and a jealous suitor named Grigory. The opera explores themes of love, betrayal, and the consequences of power. It highlights the struggles of the characters as they navigate their emotions and the political landscape of the time. The rich orchestration and dramatic vocal lines contribute to its enduring popularity in the operatic repertoire.