The Piano Sonata No. 14 in C-sharp minor "Quasi una fantasia", Op. 27, No. 2, popularly known as the Moonlight Sonata, is a piano sonata by Ludwig van Beethoven and was completed in 1801
This was played as a straight piano solo without any pedals, just the two keyboards, given the structure of the bass notes within the piece. Not something I would normally do, but I think it works well in this case. I tried to emulate the rich deep notes of a piano using some vibrato on the lower keyboard. It is not an easy piece to play evenly on the organ!
Charles
https://app.box.com/s/zyw04mxxukaaulb5ih8xfebygaa9460c