What composition by George Gershwin was billed as "An Experiment in Modern Music"?

George Gershwin’s Rhapsody in Blue, premiered in 1924 by the
Paul Whiteman Orchestra was billed as “An Experiment in Modern Music”.

The piece fused symphonic and jazz styles, reflecting Gershwin’s background as a popular songwriter.

What was the first full-scale collaboration between George and Ira Gershwin? The first collaboration between George and Ira Gershwin was the…
On what novel is George Gershwin's opera Porgy and Bess (1935) based? George Gershwin's opera Porgy and Bess is based on Porgy…
What movie was billed as "the first 100% all-talking drama filmed outdoors"? The 1929 Western In Old Arizona, for which Warner Baxter…
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Did King George III of England really go insane? Yes, King George III really went insane. The English king…
Was Queen Victoria related to King George III of England? Queen Victoria, who reigned from 1837 to 1901, was the…

What composition by George Gershwin was billed as “An Experiment in Modern Music”?