I've always wanted to learn this Passacaglia as so many other organ friends I know here in Australia play it as a "rite of passage" when they are students at a conservatorium. I don't feel left out now as I've finally recorded it! I played this on the 1721 Silbermann instrument in St. Georgenkirche Rötha, Germany, using the #Hauptwerk VPO software.
PS. I think this is @laputis' favourite Buxtehude work!