Three Dog Night is an American rock band that was formed in 1967, renowned for their eclectic style that blends elements of pop, rock, and folk music. The band was fronted by three lead singers - Danny Hutton, Cory Wells, and Chuck Negron - which contributed to their distinctive, harmonized sound. They achieved significant success in the late 1960s and 1970s, with 21 Billboard Top 40 hits including the number ones "Mama Told Me (Not to Come)", "Joy to the World", and "Black and White". Their influence and popularity have made them a notable force in the history of American rock music.