UK Music Students and their instructors have been ushered into the digital age with some new equipment introduced this week. The University of Kentucky School of Music is the proud owner of some 18 new, state of the art Yamaha Disklavier pianos. The instruments contain on-board computers that record, playback, and store musical arrangements. They were dedicated and demonstrated at the Schmidt Vocal Arts Center on Monday. Vocal Major Rebecca Farley sang a selection from Phantom of the Opera accompanied by, in essence, a phantom piano player.