For his 200th birthday, The last of six fugues written on the name B-A-C-H (Bb-A-C-B natural). The tempo indication at the beginning is "Mäsig, nach und nach schneller" ("Moderately, more and more rapid") and at Ms. 59 "Lebhafter" ("Livelier"). The materials are the 4-note theme and a triplet motiv that alternates with duple rhythm throughout, creating an almost breathless effect at the faster tempo. [7:34]