Conversation so far:
When was Rhapsody in Blue started?
Rhapsody in Blue is a 1924 musical composition by the American composer George Gershwin.
Who started the musical, Rhapsody in Blue?
At Aeolian Hall in New York City on November 1, 1923, the bandleader Paul Whiteman decided to attempt something more ambitious.
How many people were in Paul Whiteman's band?
How long did Paul Whiteman's band play for?
Was Paul Whiteman and his band the only ones to play Rhapsody in Blue?
The musical, Rhapsody in Blue was played by other musicians including Oscar Levant with the Philadelphia Orchestra and jazz-rock artist Eumir Deodato.

Question: How much of an impact did this have on the genre?
Self-contained rewrite: How much of an impact did Rhapsody in Blue have on the genre?