Dan Tepfer is a sought-after composer and pianist who also studied computer programming and physics. His album of improvisations on Bach’s Goldberg Variations drew a lot of attention some eight years ago. Now, he’s released Natural Machines, a record of music for pianist and computer that responds to his real-time improvisations according to “simple rules” - musical algorithims that he programmed. Dan Tepfer joins us to explain what he’s done, and to do some of it on a Yamaha digital piano, in-studio. - Caryn Havlik Watch the session here: