Mobb Deep was an American hip hop and music production duo from New York City. The duo consisted of rappers Prodigy and Havoc. They are considered to be among the principal progenitors of hardcore East Coast hip hop and hip hop in the mid-1990s. Mobb Deep became one of the most successful rap duos of all time, having sold over three million records. Their best-known albums are The Infamous (1995), Hell on Earth (1996) and Murda Muzik (1999), and their most successful singles were "Shook Ones (Part II)" and "Survival of the Fittest." They were known for their dark and hardcore delivery.