Here is what I played for yesterday's church service as a prelude. In the above score, you can see the soprano and the bass parts written in. I also supplied the alto and the tenor parts and the bass part was played by the pedals.
This prelude is an interesting harmonization and modulation exercise. I wanted to modulate from F major to F# minor which is a very distant key to F major.
So I had to include a couple of intermediate keys: Bb minor (harmonic Subdominant of F major) and Db major (harmonic Dominant of F# minor changed enharmonically from C# major).
Then of course I had to go back to F major through these intermediate keys in the opposite direction.
Here is the full tonal plan:
Here is the PDF file for printing. Try to supply the missing middle parts yourself and avoid parallel fifths and octaves. I used only root position chords and chords in the first inversion. You can also add a little more dissonant four-note chords whenever you see a possibility.
After you are done, post your time to comments.
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Our Hauptwerk Setup:
Drs. Vidas Pinkevicius and Ausra Motuzaite-Pinkeviciene
Organists of Vilnius University , creators of Secrets of Organ Playing.
Don't have an organ at home?
Download paper manuals and pedals, print them out, cut the white spaces, tape the sheets together and you'll be ready to practice anywhere where is a desk and floor. Make sure you have a higher chair.