It's an optimistic piece, suitable to be performed either during organ recitals or at the end of church services as a postlude. It's based on the famous gregorian chant "Veni Creator Spiritus" which is sung for the feast of Pentecost.
I have taken the form of the work (but not the style) from Prelude in E flat major, BWV 552 of J.S.Bach (A B A C A B C A) and added introduction and a Coda. The style, however, is mildly modern and might remind of modal French 20th century writing.
It's not too easy to play (I would say it's an intermediate level piece) but quite compact and colorful in terms of modes. I have included my own registration suggestions but you are free to adapt to the instrument you have available. Although you can play it on a single manual organ, at least two manuals should be better.
The clear structure and rests make it relatively easy to change registration without the help of an assistant even on a tracker organ which does not have combination pistons. That was my intent, actually, because I regularly play a 3 manual mechanical action organ at Vilnius University St. John's church and manipulating the stops is quite a workout for one person there (especially if it's the organist who's doing the work).
If you like it and think it's worth sharing please email, forward or otherwise share it with other organists who might find it useful.
By the way, do you want to learn my special powerful techniques which help me to master any piece of organ music up to 10 times faster? If so, download my video Organ Practice Guide.