My first response to Fuge in Rot was that it was a bunch of repeating red shapes.  However, after taking a closer look at the image, I felt a morbid sense from the piece, akin to that of Johann Sebastian Bach's Bist du Bei Mir, a beautiful funeral march, asking if someone would be with them at their death, which came with the color tones of red fading to black.  It also brought to mind the piece from Les Miserables, Red and Black, with a repetitive melody and chorus, with variation in wording.  The shapes are akin to a singer shaping each vowel and sound to keep the audience interested in a repeating melody, or a fugue's internal variation to grab the attention of an audience and keep it