This Fantasia by Pachelbel is only two pages in my Baerenreiter Edition, but imho it is a grand work..
I could very well be wrong, but I feel this Fantasia as an expression of grief or despair.
Pachelbel uses dissonants, long lingering ones, in important places of this work, which is rather different from most of his other organ music.
I could not find much information on the piece in various places, on paper and on the internet, other than that most youtube and contrebombarde organists played it rather different from how I feel it.
So: could be a colossal interpretational blunder, but this is my humble idea about it.
Registration: HW !6,8', 8': 4' Bourdon and flutes