O Come, Emmanuel by ThePianoGuys!
This is so beautiful and calming.
The backdrop for their performance is a replica of the streets of Jerusalem.
O Come, Emmanuel
O come, O come, Emmanuel,
And ransom captive Israel,
That mourns in lonely exile here
Until the Son of God appear.
[Refrain] Rejoice! Rejoice!
Emmanuel shall come to thee, O Israel.
O come, Thou Wisdom from on high,
Who orderest all things mightily;
To us the path of knowledge show,
And teach us in her ways to go . . .