Discuss the below in detail:
Q: In the early to mid 1940's big band jazz had become so popular there were literally hundreds of bands across the country playing for throngs of dancers. Jazz music had basically become a backdrop for dancing. What led to the development of bebop and how did this affect the popularity of jazz music? What did Charlie Parker and Dizzy Gillespie do to raise the bar for jazz performance? How was their playing different? Be specific.