JKF Fischer: Ariadne musica preludes/fugues - Bradley Lehman

nice, instructive video. Beautiful organ, played by a sensitive musician (pobrably a harpsichordist too). Fischer was sensitive, fine composer!

Bach used the theme from Fischer's E major fugue in his E major fugue of WTC Book II

Very pleasant this performance: the whole Ariadne Musica and other Fischer's collections are really beautiful and very didactical (the video here displayed is equally instructive for musicians, since they can follow the score).
I would like to know if is it possible to put the remainder of the collection and get the organ specifications.
Greetings from Brazil

Thanks, I'm glad you enjoyed it. The recording of the entire book is available in the 3-CD set "A Joy Forever". Search the internet for "Goshen College Music Center Organ" or "Larips Fischer" to get the organ specification and details about the recording.

Where can I get the sheet music for these?

The 1715 print (shown here) is available in the Performers Facsimiles series, #197.

In modern notation there is a fine edition of Fischer's complete keyboard works edited by Werra, 1901, available as Edition Breitkopf 8407.

Someone is working on a new and free PDF edition (not yet complete) available at the IMSLP (International Music Score Library Project).

This is a nice clear recording: you can easily hear the effect of the extraordinarily sharp C# and G# of this tuning in the E major piece. Pay attention to the last bars of the prelude and fugue respectively, or the A-C# in bar 4 of the prelude.

To me these chords sound unnecessarily strained and cacophonous - like equal temperament gone wrong. Maybe Brad likes them. That's personal preference.

Are you going to believe some who tells you he knows what JS Bach's personal preference was?

I invite you to play all the way through the book yourself, paying attention not only to the E-G# character and A-C# character, but also to the Ab-C and Db-F that come up in this music. Use any temperaments of your choosing, and listen to them carefully. Also, if you're able, listen all the way through Serge Schoonbrodt's recording of this book in MEANTONE. The issue is much more complex than a cavil about disliking a particular E-G# sound!

And, I should add: in this temperament, the A-C# you're complaining about is exactly the same size as the Db-F. It's true that in some other temperaments, perhaps of your own preference, the A-C# is considerably smaller/gentler than this...but those temperaments pay for it in having Db-F correspondingly wider.

The naturals here are spaced with 1/6 comma tempering. If they'd be narrower, say 1/5 or 1/4 comma downtown at C-G-D-A-E, you'd have an even worse A-C# and/or Db-F to complain about.