Jazz piano innovator Ahmad Jamal dies aged 92

Ted Gioia wrote a great obituary to jazz pianist Ahmad Jamal, who died on Sunday aged 92: "Other musicians have changed the sound of jazz in various ways. But Ahmad Jamal actually transformed time and space. He opened up an alternative universe of sound, freer and less constrained than what we had heard before. The rules of improvised music were different after he appeared on the scene... Ahmad Jamal sat down at the piano, and just floated over the beat."