Bach's actual handwriting from an original source.
For purposes of making a nice-looking fabric print, I've taken out most of the spaces around the music, slightly adjusted things to line up nicely, and staggered page breaks to make the pattern repeat seamlessly, but otherwise the whole Fugue is there. If you can find the beginning and where each page starts and stops, and if you don't mind reading Bach's handwriting, you can actually read the piece off of the fabric.