Thomas Wright "Fats" Waller was an American jazz pianist, organist, composer, and singer. His innovations in the Harlem stride style laid much of the basis for modern jazz piano. A widely popular star in the jazz and swing eras, he toured internationally, achieving critical and commercial success in the United States and Europe. His best-known compositions, "Ain't Misbehavin'" and "Honeysuckle Rose", were inducted into the Grammy Hall of Fame in 1984 and 1999.

Stride jazz piano, often shortened to stride, is a jazz piano style that arose from ragtime players. Prominent stride pianists include James P. Johnson, Willie "the Lion" Smith, Fats Waller, Luckey Roberts, and Mary Lou Williams.