Georgesgran, Chestnut, Greyduster and Jaxjacky: Yes, Three Kings from Persian Lands was a great favourite with me, too. The interplay of the melody with the contrasting four part harmony beneath was quite difficult and reminded me of some of Bach's choral compositions.
Here it is for any who are interested:-
www.youtube.com/watch?v=HIedUioo_Jk
P&O Iona cruise getting cold feet!