Here's the response and not one that will probably work for you I suspect:
Ahhh, we have the ultimate source for that type of music. Our Director of Worship (who knows Neil and went to school with him), writes all original arrangements every week--or at least most every week. He writes arrangements based on whatever instruments happen to be available that week. For example, on Easter, we had three trumpets, my tenor sax, Jim's bari sax, two flute players, keyboard and rhythm section. We played some amazing stuff.
I have heard so many cool arrangements of Amazing Grace, you would not believe it. Today, he arranged a really cool rocking rendition of Rock of Ages. And he has done really awesome stuff to "Come Thou Fount of Every Blessing". This young man is one of the most talented guys I have ever encountered. He plays guitar and viola and his wife plays violin. One week he wrote all country blue grass music,k
If your friend is willing to pay for arrangements (believe me, our Director needs money--you know that church's cannot afford to pay their staff very much!), then perhaps I can connect them.