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Thefugue is in6 8 and has 143 measures. It is made up mostly of eighth notes, quarter notes, dotted quarter notes, and sixteenth notes. It has asubject and acountersubject, although the countersubject does not always accompany the subject. Starting from measure 61, the second subject appears, which is similar to the countersubject, both in achromatic scale. In measure 97, the first and second subject begins to appear together, with the second subject joining onequarter note after, and one octave higher or lower than the first subject; they appeared in total for five times until the end, always in the same form.[2]