Feliks Nowowiejski (7 February 1877 – 18 January 1946) was a Polish composer, conductor, concert organist, and music teacher. Nowowiejski was born in Wartenburg (today Barczewo) in Warmia in East Prussia, German Empire. He died in Poznań, Poland.
Read an extensive biography on Wikipedia here:
https://en.wikipedia.org/wiki/Feliks_Nowowiejski
Nowowiejski wrote a considerable amount of organ music, most notably 9 Organ Symphonies and 4 solo organ Concertos. I discovered his music in the process of researching for my book on the Organ Symphonie. Neat trivia: none other than Marcel Dupré premiered one of his symphonies once upon a time...
The 3rd Symphony is based on the catholic hymn "Lourdes", and the opening movement quotes the tune quite liberally, with brash toccata interludes and pedal cadenzas, all foiled by a 2nd quieter fugal theme, which reappears several times.
I chose to do this as a MIDI rendition, as I'm still deciding whether or not to invest the time it requires to learn it. I'm proud of the way it came out, though.... and intensely curious to try it on a couple other sample sets, most notably Caen and Doesburg.