Сергей Рахманинов was a Russian composer, pianist, and conductor, born on April 1, 1873, in Semyonovo, Russia. He is known for his rich harmonies and emotional depth in his music. Rachmaninoff's most famous works include his Piano Concerto No. 2 and Rhapsody on a Theme of Paganini, which showcase his virtuosic piano skills and lyrical melodies. Rachmaninoff emigrated to the United States after the Russian Revolution in 1917, where he continued to compose and perform. His music blends elements of Romanticism with his unique style, making him one of the most celebrated composers of the early 20th century. He passed away on March 28, 1943, in Beverly Hills, California.