This is my rendition of Handel's Ode for the Birthday of Queen Anne arranged by my organ friend, Phil Lehenbauer. This piece was most recently and famously played at the wedding of Prince Harry and Meghan Markle.
Lehenbauer's suggested registrations call for Swell Strings and a Solo Flute or Trumpet. Neither of these are available on 1721 Silbermann instrument in St. Georgenkirche Rötha, Germany! These are the challenges we face as organists—that being, every instrument is different and we have to be creative and make use of what we have presently at our disposal.
The registration I used was this:
OW: 8' + 4' + 2-2/3' + 1-3/5'
I think it came off quite nicely...let me know what you think in the comments.
As another matter of interest, the manual compass of this instrument is only 4 octaves, so it was not possible to hit this top D. I played this fragment down an octave and it still sounds acceptable.