"Yö" is a Finnish rock band formed in 1981, known for their melodic sound and emotional lyrics. The band has released numerous albums and is recognized for hits like "Joutsenlaulu" and "Kyy". Their music often blends elements of rock and pop, appealing to a wide audience in Finland. The band's lineup has changed over the years, but key members include Jussi Hakulinen and Olli Lindholm. Yö has played a significant role in the Finnish music scene, contributing to the popularity of rock music in the country. They continue to perform and create new music, maintaining a loyal fan base.