Judy Garland (right) sang "I Got Rhythm" in the 1943 movie version of the 1930s musical Girl Crazy.

When George Gershwin wrote "I Got Rhythm" for the 1930s musical Girl Crazy, he created one of the most catchy melodies in American history. Also in 1919, Gershwin composed his first “serious” work, the Lullaby for string quartet. One Gershwin's "I Got Rhythm" -- … A study in harmony that Gershwin composed as an exercise for Kilenyi, Lullaby ’s delicate beauty transcends its academic origins. One of the Gershwin’s most famous songs was premiered by Ethel Merman in Girl Crazy as a climactic number for the show’s first act.

About “I Got Rhythm”. arrangements on the famous George Gershwin well-known song I've Got Rhythm. Hope you guys enjoy!

In the 1920s, when George Gershwin completed the musical components of a new song, he'd pass the music along to his brother, Ira, for the lyrics.