 Here are some of the greatest jazz artists of the 20th century in 17 rare, vintage performances, from pioneers such as Duke Ellington, Cab Calloway, and Louis Armstrong, to Lionel Hampton, Dizzy Gillespie, and Coleman Hawkins at mid-century, and on to more progressive musicians such as Grover Washington Jr., Chick Corea, and Herbie Hancock, just to name a few.