Katyusha is a famous Russian folk song that became popular during World War II. It tells the story of a young woman named Katyusha who longs for her beloved, a soldier fighting far away. The song's emotional lyrics and catchy melody resonated with many, making it a symbol of hope and love during difficult times. Originally composed in 1938 by Matvei Blanter with lyrics by Mikhail Isakovsky, Katyusha quickly gained popularity among soldiers and civilians alike. It has since been performed by various artists and remains a cherished piece of Russian culture, often associated with patriotism and nostalgia.