George Gershwin penned many of jazz's most enduring songs before his untimely death at the age of 38. A genius with both words and melody, he hit every mood: romantic and whimsical (“I've Got a Crush on You”), longing (“Someone to Watch Over Me”) and even raucous (“Strike Up the Band”). The intoxicating smoothness and lighthearted elegance of Sinatra's and Fitzgerald's interpretations cemented his legacy.