Another overlooked great, and one of the most interesting and unusual (in sound and concept) tenor players was Warne Marsh. A West Coast player who was one of the main exponents of the Cool School and a protege of the great Lennie Tristano. His use of the piano-less rhythm section was a testament to the great command of harmony that he had. One of the true tests for a jazz player, and considered by the players themselves one of the things that separates the "men from the boys" is the ability to improvise over a tune without the "crutch" of the piano's harmonic underpinnings.
http://m.youtube.com/watch?v=4Y_8UYtd2K4
http://m.youtube.com/watch?v=4Y_8UYtd2K4