“Old recordings of great performers are often marred by scratches and surface noise, or by sound badly filtered through primitive microphones. [But a new technology] is offering the same music with the immediacy of live performance and the acoustical advantages of a contemporary piano.” The innovator is Dr. John Q. Walker, and he breathed new life into the Disklavier, which has so far mainly been used to allow live performances to be simultaneously reproduced far away on an automated piano. Walker’s latest project is the digitization of recordings by old masters of the instrument, which can then be newly “performed” by the specially equipped pianos.