Today jazz great Dave Brubeck died, a day before his 92nd birthday. In May 2011 Ted Z. and I, and our two wives, got to see him play at Princeton. He was 90 at the time, and although he had trouble walking, he could still play beautifully. Have a listen to a classic performance of his signature number Take Five:
http://www.youtube.com/watch?v=PQLMFNC2Awo