I agree basically with the second reviewer. The Mozart fantasia is very good (with a yummy fugue!), but still better would have been the Adagio & Allegro K594. Preston plays throughout the CD like a late 19th century Romantic, naturally using the expression pedal - today this kind of playing is frowned upon by period instrument dogmatists, but in the early 60s it still could be played the good old way. This confused Reviewer #1; in fact the dynamic balance of the recording is superb, not over-extended and this allows the performer supreme delicacy and power at the other end.
Thanks to the remastering, the good selection of music and the brilliant performance, this CD is a good presentation of the instrument as it gets. The sound of the Abbey organ is impressive and Preston's registrations rich and virtuosity overwhelming. Unfortunately he didn't come up as well in some of his later recordings, like the Handel concertos, due in part to the problems with period instrument constraints I dipped into above.