By Ken Norton
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It’s February 13, 1960, and Ella Fitzgerald stands on a West Berlin stage, nearing the end of a stellar performance. On a whim, she decides to sing “Mack the Knife,” a popular song, but one she’s never performed live. The first chorus goes as planned, and then… she blanks and completely forgets the lyrics to the next verse. What do you do in her situation— choke up, end the song abruptly, or maybe just repeat the first chorus? Not the legendary Ella Fitzgerald. Instead, she begins to improvise.