Q: Where can I get the sheet music for this piece? A: You can see the sheet music in Vincent's own video for this piece: http://www.youtube.com/watch?v=y1isQl... If you ask him, he'll probably give you the sheet music.
Q: Who is playing this piece? A: Nobody; this is just the playback from the Sibelius notation program.
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/