I have an entire collection. New album every year. I'm a big fan of your Nashville Neighbor Amy Grant. Current fave: Almost There (with Michael Smith) - It's on his 2014 album, which also includes Carrie Underwood on a piece called All is Well. Just saw the Amy Grant/Smitty Christmas Concert - so great - special guest Jordan Smith from the Voice - he did All is Well, and my goodness - you could have heard a pin drop - amazing. The thing I love best about Amy (besides her voice) is that she is till writing NEW Christmas music (check out "To Be Together" on her new Christmas album) - which become instant favorites - Breath of Heaven, Emmanuel, Heirlooms.......Love her.
Another favorite: local group Cantus (man singers. Love, love, love!)
Floating in the "not often heard" bucket is Sting's version of Angel Gabriel, and the Bare Naked Ladies with Sarah McLachlan for God Rest Ye Mary Gentleman. Last but not least: Christmas Dinner, Peter Paul & Mary.
I could go on and on.