Ragtime's popularity waning and blues thriving as a separate genre led jazz to be the primary musical medium of popular culture in the early 20th century.
Step-by-step explanation:
Jazz is a music genre originated in United States of America. First recording of Jazz was performed by Original Dixieland Jazz Band in the year of 1917. Jazz is famous for its Rhythm.
The use of the term Jazz was controversial when it was new. The basic New Orleans jazz group played Dixieland Jazz.
The New Orleans jazz ensemble was not truly polyphonic because its texture was dominated Cornet (Trumpet).