Bebop is a genre characterized by fast tempos, dissonant harmonies and complex rhythms. The mid-1940s were devoid of bop artists like “Dizzy” Gillespie and Charlie Parker who were at the forefront of the movement. The transition from Count Basie's swing riffs in the 1920s and 1930s to Thelonious Monk's post-World War II improvisations is full of history. This research will explore the beginnings and evolution of Bebop as a jazz subgenre and its influence on the rise of jazz music as a concert form. During the “Swing” era of jazz, from the 1920s to the 1930s, it was dominated by the big band movement. Artists like Duke Ellington and Count Basie were famous for their great arrangements and riffs. Although these artists were successful, their white counterparts such as Benny Goodman were increasingly popular. Driven by a desire to get away from repetitive riffs and a lack of solo opportunities for young African American musicians in swing bands led by white bandleaders, many musicians began to experiment with different types of music. An often told story in jazz tradition is "How Bebop was born at Minton's Playhouse". (Rosenthal, 10) Bebop was born without a name and was defined as “modern” jazz by its first musicians. Kenny Clarke when asked about the name bebop said that the label "Bebop" was given by some journalists but all they called it was modern music. (Owens, 1) “Dizzy” Gillespie once said that many of their original songs had no names, so when a customer asked for a song they simply said bebop. (Owens, 1) At Minton's Playhouse on 118th Street in New York City, some of the greatest boppers such as Charlie Parker, "Dizzy" Gillespie and Thelonious Monk (...... middle of paper ...... (Porter , 21) After that many artists moved away from the "Bebop" label to continue playing the music but to keep it untainted by the stigma attached to the name Duke Ellington once warned Gillespie of categorizing it as music, "Dizzy, the biggest mistake what you did was let them call your music be-bop, because the moment they name something, it's dated." (Porter, 23) Bebop has continued to live on under the names of different jazz genres such as Hard Bop Charles Mingus and Post-Bop by Wynton Marsalis The creation of Bebop and how it evolved changed the evolving world of jazz and moved away from the big band world created for the dancing audience to a place where the Jazz was considered a form of cultural expression for a generation of young musicians who lived in a world where they chose to play their own music.