The name Raymond Kurzweil is likely to be familiar to most readers. One of his many inventions, the Kurzweil 250, was the first 88-key polyphonic digital synthesizer on which chords could be played and that was capable of realistic reproduction of the sound of a grand piano and other acoustic instruments based on digital sampling and recording of real sounds. Stevie Wonder knew of Kurzweil because of the latter’s earlier invention of a reading aid for the blind and interest in building a synthesizer, Wonder asked Kurzweil if he could create an electronic musical instrument specifically adapted for him. Because Wonder represented the kind of professional musician Kurzweil wanted to cultivate as a user and advocate for his instrument, he actually created a Braille prototype of the synthesizer.