One other piece of music that I have been led to by my truly awesome guide is Psalm 23 of The Bible. For me, this psalm means a great deal and it has helped in my prayers and connection with God. Funnily enough, the number 23 is my favourite number and it always has been since I can remember so that's quite ironic.
Psalm 23 - The Lord Is My Shepherd
Hope it helps!
Nicky