Midwest hip hop is hip hop music performed by artists from the Midwestern United States. In contrast with its East Coast, West Coast and Southern counterparts, Midwest hip hop has very few constants. Its first dose of national popularity in the mid-90s was associated with fast-paced styles of rappers such as; Twista (Chicago), Tech N9ne (Kansas City, Missouri), and Bone Thugs-n-Harmony (Cleveland). These artists became the first to introduce Midwest hip hop that rivaled the popularity of West and East Coast styles. However, subsequent acts which have since risen to national prominence such as Nelly, D12, and Kanye West share very few similarities. It is because these lack of constants between acts from different cities (and sometimes even between artists from the same city) that it can be extremely difficult to define a "typical" Midwest sound. One characteristic of Midwest hip hop is that beat tempos can range from 90 to about 180, while East Coast's beat tempo is 90-120, West Coast is 100-120, and Southern rap is 80-110. Prozak, as stated in his DVD "The Hitchcock of HipHop", says that the Midwest's style often revolves around "Dark beats and lyrics".