Nancarrow, Study #37 for Player Piano (score+roll) 

Study #37 for Player Piano by Conlon Nancarrow, accompanied by an animated graphical score.
FAQ
Q: What version is this?
A: I've put two versions of this video on RU-vid. The first version ...
• Nancarrow, Study #37 f...
... is based on data directly from the published score (Schott ED 7685), entered by Chris Sansom. The second version ...
• Nancarrow, Study #37 f...
... incorporates data scanned by Trimpin from Nancarrow's original rolls. In the second version, the timings of the notes from the score were adjusted to match the roll timings as much as possible. In cases where notes were missing or incorrect on the rolls (as judged by the score), these were estimated or corrected. In one passage, where both the roll and the score have what appear to be the same octave error; I used the roll/score notes (and not Sansom's correction).
Q: What do the colors mean?
A: In each of the twelve canons in this piece, the 12 voices have 12 tempi. Colors are assigned by voice, with dark blue corresponding to the fastest tempo.
Q: Where can I see more of these videos on RU-vid?
A: On this playlist:
• Nancarrow
Q: Where can I get a recording of this piece?
A: Here:
www.amazon.com/...
Q: Could you please do a video of _______?
A: Please read this ...
www.musanim.com...