There have been three generations of K-Pop. The first generation began in the late 1990s with groups such as H.O.T., S.E.S., and Fin.K.L. The second generation began in the early 2000s with groups such as TVXQ, Big Bang, and Wonder Girls. The third generation began in the late 2000s with groups such as Girls' Generation, 2NE1, and SHINee.