Devices have already been made and sold that accomplish this -- presumably because the idea is so obvious. http://www.google.com/search?q=electronic+sheet+musi

Devices have already been made and sold that accomplish this -- presumably because the idea is so obvious. http://www.google.com/search?q=electronic+sheet+music+reader http://www.google.com/search?q=electronic+sheet+music+reader My keyboardist/drummer friend has one such device.