Fats Waller was an American jazz pianist, organist, composer, singer, and comedic entertainer. He was one of the most popular performers of the 1920s and 1930s, and his influence on subsequent generations of jazz musicians was immense. Waller's compositions 'Ain't Misbehavin'' and 'Honeysuckle Rose' remain enduring jazz standards. He was also known for his humorous lyrics and infectious personality.