This hymn was in my head all day yesterday...I think I read something that referenced Psalm 42 or something, and immediately thought of this.
It's a beautiful hymn, both the words and music. Unfortunately I wasn't able to find a recording of it anywhere online, so I took a picture of it from my hymnal, so if you can read music you'll have an idea of what it sounds like anyway. 662 in the Trinity Hymnal if you have one.
(Click to enlarge.)
As the hart longs for flowing streams,
So longs my soul for thee, O God.
My soul does thirst for the living God;
When shall I come to see thy face?
My tears have fed me day and night,
while men have said, "Where is your God?"
But I recall as my soul pours dry,
The days of praise within thy house
Why do I mourn and toil within,
When it is mine to hope in God?
I shall again sing praise to Him;
He is my help, He is my God.