From the recording The Pathlighters and the Traveler
This is one of Bach's only fugues written in a different key signature than the prelude with which it is paired. The two keys are enharmonic, so they do sound the same, though the fact that the prelude is written in 6 flats and the fugue in 6 sharps definitely presents a challenge in learning and memorization. This fugue feels like a prayer to me (Madonna reference unintended), supported by the instances of heavenly arrival following passages of accumulating intensity, along with the final major key cadence. The recording was made during a live performance I gave at Lincoln Recital Hall in Portland, OR.