Georges Gershwin was an American composer and pianist whose compositions spanned Jazz Popular and Classical genres. Among his best-known works are the orchestral compositions Rhapsody in Blue (1924) and An American in Paris (1928), the songs "Swanee" (1919) and "Fascinating Rhythm" (1924), the jazz standard "I Got Rhythm" (1930), and the opera Porgy and Bess (1935) which gave birth to the hit "Summertime". He began his career as a song plugger but soon started composing Broadway theater works with his brother Ira Gershwin and with Buddy DeSylva. He moved to Paris intending to study with Nadia Boulanger, but she refused him. He subsequently composed An American in Paris, returned to New York City and wrote Porgy and Bess with Ira and DuBose Heyward. Initially a commercial failure, it came to be considered one of the most important American operas of the twentieth century and an American cultural classic.