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Published on Jan 12, 2010
Prelude 20 in A minor from Book II of J. S. Bach's Well-Tempered Clavier, performed on the Roland VP-550 Vocal and Ensemble Keyboard by Stephen Malinowski, accompanied by scrolling music notation and bar-graph score.
Q: What are we hearing and how did you create it? A: The voice-like sounds you're hearing are made by me singing and playing through the Roland VP-550 Vocal & Ensemble Keyboard, which is a vocoder that's been enhanced to make its output sound more like singers; here's an article on vocoders: http://en.wikipedia.org/wiki/Vocoder If you want to see what it looks like when a person is performing with a vocoder, I highly recommend Don Lewis's performance of Swing Low, Sweet Chariot: http://www.youtube.com/watch?v=0TdQwO... The main difference between what Don's doing and what I did is that I performed each voice separately.
Q: Is there a way I could make the bar-graph scores myself? A: The Music Animation Machine MIDI file player will generate this display; you can get the (Windows) software here: http://www.musanim.com/player/ There are lots of places on the web where you can get MIDI files; I usually go to the Classical Archives site first: http://www.classicalarchives.com/
Q: Why do the scores move at different speeds? A: The bar-graph score is graphical, and in it, time translates exactly into horizontal position; conventional notation is symbolic, so there is usually one symbol per note, regardless of whether it's a long or a short note, and the symbols are more or less evenly spaced (for legibility); so, when the notes are faster, the notation needs to move faster to keep up. .