Martin Scorsese said this quote
“ The most interesting of the classic movie genres to me are the indigenous ones: the Western, which was born on the Frontier, the Gangster Film, which originated in the East Coast cities, and the Musical, which was spawned by Broadway. They remind me of jazz: they allowed for endless, increasingly complex, sometimes perverse variations. When these variations were played by the masters, they reflected the changing times; they gave you fascinating insights into American culture and the American psyche. ”