He was one of the geat jazz innovators . He and his quartet, especially the artistry of Paul Desmond and the rhythmic coordination of Joe Morello, enabled the unique sound and time signatures originated by that band. For you younger folks or non jazz fans, buy the albums Time Out and Time Futher Out and prepare to be astounded. Pleasing , seemingly simple music that is so complicated in time signature that you will not be able to tap your foot to the back beat! The only SRO ticket that I ever bought was to hear him perform. He and Joe will be missed.