The Monotones were a six-member African American doo-wop vocal group in the 1950s. They are considered a one-hit wonder, as their only hit single was "The Book of Love", which peaked at #5 on the Billboard Top 100 in 1958. The Monotones formed in 1955 when the seven original singers, all residents of the Baxter Terrace housing project in Newark, New Jersey, began performing covers of popular songs.