John Arthur "Jaki" Byard was an American jazz multi-instrumentalist, composer, and arranger. Mainly a pianist, he also played tenor and alto saxophones, among several other instruments. He was known for his eclectic style, incorporating everything from ragtime and stride to free jazz.
Byard in 1979
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.
Thomas "Fats" Waller (1904–1943), a student of James P. Johnson, was an important contributor to the stride piano style.