I have this book, called "Freehand", about drawing. It was given to me by my cousin Billy for my birthday, who is on Scratch, but I can't find him, but I digress. It has a chapter, more like a section, called "Geometric Structure", and the illustration is of a suitcase drawn on a sheet of piano music. I can play piano music, but not very well, so I got my sister's piano teacher to play it. Press one to hear it, which I call Unnamed, in Treble Clef, and 2 to hear Unnamed in Bass Clef.
Does anybody recognize this? Credit to Isaac Tobin for drawing it (he's the artist).