Bach, "Little" Fugue in G minor, BWV 578, performed on organ by Stephen Malinowski, with an animated graphical score.
FAQ

Q: How can this be played with just two hands?
A: It can't. It's played on the organ, and one of the melodic lines is played by the feet, on a pedalboard. Here's a video showing what that's like:
   • Bach, BWV 578 "Little" Fugue in G min...  

Q: I appreciate the animated graphical scores you make; how can I support your work?
A: Thank you! The easiest way to support my work is by contributing via Patreon:
www.patreon.com/musanim
If you'd like to help in more specific way, consider this:
www.musanim.com/underwriting

Q: Where can I get free sheet music for this piece?
A: Here are a few places:
imslp.info/files/imglnks/usimg/d/dd/IMSLP04395-Bac…
icking-music-archive.org/scores/bach/bwv578/Bach_F…
icking-music-archive.org/scores/bach/bwv578/fuga-b…

Q: Is there a version for piano?
A: Here's an arrangement I made:
www.musanim.com/pdf/bwv578_LittleFugue_PianoArr.pd…
and here is one of Olga Samaroff's arrangements
www.musanim.com/pdf/samaroff_bach_fugue.pdf
(much better than mine)

Q: I thought you said you never did remakes!
A: In 2013 Pearson hired me to make some videos for their "Listen to This" music appreciation package, and I decided that for this piece, it would be better for them to have an organ version, so I made one.

Q: What instrument is that?
A: It is two Ahlborn-Galanti modules (one Baroque, one not).

Q: Could you please do a video of _________?
A: Please see:
www.musanim.com/requests/