Michael Wise's "Prepare Ye the Way," performed by St. John's College Choir, Cambridge:

Isaiah 40:3-9

Prepare ye the way of the Lord,
make straight in the desert a highway for our God.
Every valley shall be exalted,
and every mountain and hill shall be made low:
and the crooked shall be made straight,
and the rough places shall be made plain.
And the glory of the Lord shall be revealed,
and all flesh shall see it together.
And the voice said, Cry.
What shall I cry?
All flesh is grass,
and the goodliness thereof is as the flower that is in the field:
The grass withereth, the flower fadeth:
but the word of our God shall stand for ever.
O Zion, that bringest good tidings,
get thee up into the mountains;
O Jerusalem, that bringest good tidings,
lift up thy voice with strength;
and say unto Judah, Behold thy God!