Brandi Carlile and Sam Smith, This Is One Well Sung Song...Whew!!! "Party of One"

I've never listened to Brandi Carlile before, this is my first time.  This song gives me chills and makes me wonder what it is that Sam Smith can't sing beautifully.  The note that these two hit at the 3:25 mark is stunning.  That kind of register and clarity is so rare.  Beautiful harmony.
I'll have to check out more from Brandi and I already love Sam.