He considered Well Tempered Clavier as a model of perfection and following his wife's request
made arrangement for Strings Chamber Orchestra. You can listen what we have in result along with Fantasy (fantasia) f-moll K-608 which was originally composed for mechanical organ and then arranged for Strings Chamber Orchestra. You can listen for both versions.
In addition there are: Adagio and allegro. f-moll, K-594 both for pipe organ and string chamber orchestra and Adagio and Fugue - c-moll, KV 546 performed by Lucerne Festival Strings Chamber Orchestra. Conductor - Rudolf Baumgartner. It was recorded 12-14 and 16 December 1974.