(Can anyone name the manufacturer of the organ?)
Here are the names of the organ stops, seen just before Howie brings the dead hare to Lord Summerisle and Miss Rose. This shot is only in the Director's Cut. (screencap)
sub bass (16 ft)
salicional (8 ft) - "These names, of which Salicional is by far the most common, derive from the Latin salix, meaning willow"!!! (Encyclopedia of Organ Stops)
flute d'amour (4 ft)
lieblich gedact (4 ft)
voix celeste (8 ft)
and one more I can't read (probably a 16 ft pipe).
It had been intended that Lord Summerilse would be playing the organ in this scene. Unfortunately, mice had eaten through the works so it was unplayable.