You can search google books: www.books.google.co.uk and type james herriot organ, and you will find the quote pcnd gave, although you cannot see where it is in the book.
When I typed this query in 'normal' google I came up with this article in the Northern Echo, dated 1st August 2005.
And I found this snippet of info on mr. Herriot (which wasn't his real name): 1916. James Alfred Wight, or "Alf," as he's known locally, was born in Sunderland, a small town in Yorkshire on October 3. Three weeks later, the family moved to Glasgow. As the son of a mother who sang professionally and a father who played piano and organ, music played a large part in the household, and Wight grew up with an especial love for Elgar, Beethoven, and Mozart. He lived in Hillhead near Glasgow, Scotland, and attended Hillhead High School.