Whistlin' Alex Moore (Alexander Herman Moore, Dallas, Texas, November 22, 1899 – January 20, 1989) was an American blues pianist, singer and whistler. After his father's death, Moore dropped out of school to support his mother and two siblings. He learned the piano before entering the United States Army in 1916. His overall sound during the 1920s combined elements of the blues, ragtime, barrelhouse boogie, and stride. The same decade saw Moore acquire his nickname, based upon a whistle he made while playing the piano.

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