“52nd Street Theme” is piece composed by Thelonious Monk. The piece is a contrafact based loosely on rhythm changes in C. The tune was also called “Bip Bop” by Monk, and he claims that the tune’s latter title was the origin of the genre-defining name bebop. It quickly became popular as an opening and closing tune on the clubs on 52nd Street on Manhattan where Dizzy Gillespie and Charlie Parker played. It was first recorded by Dizzy Gillespie’s sextet on February 22, 1946.