If I can only choose one:

And when the broken-hearted people
Living in the world agree
There will be an answer
Let it be

For though they may be parted there is
Still a chance that they will see
There will be an answer
Let it be

The Beatles, “Let It Be”

When I have to make choices like this, I really feel like Dan Andriano of Alkaline Trio had it right in “Blue Carolina”:

You know all my favorite singers
Have stolen all of my best lines