If You Could Play Only One Song...

Question:

If you could play only one song, from a jukebox containing an unlimited amount of songs...
What song would you pick?


Remember, only one song.


A good friend posed that question to me the other day over lunch.  I remember well my reaction, my eyes widened, my mouth flew open, and my mind flashed: easy question, easy question!!!  I went to answer, then I realized I could not answer. The question, that started out fun, turned hard. My mind then shifted into another gear,  I went to throw out an answer...

And he reminded me... Only one song, that is all you can pick.

I realized then my friend had posed to me a question that takes you to a level of deep introspection. It is a question you think you can easily answer, then like hitting a wall, you can not.
Memories began to flood in.
Periods of time envelope you, People, family, lovers, successes, failures, laughter, and tears....
Your life flashes before you as you contemplate a response.
  
I found myself trying to shift my left side of my brain into over drive to provide me with the "right" answer. I am a lover of music and this silly question and its simple, simple answer should be rolling off my tongue!
Yet I found myself wanting to pick a song that would benefit me the most ,with the least risk.

So now I really have two questions to answer.

If I could only pick one song to play, what would it be...

And....

What is the risk I am afraid of facing...

A simple, fun question blooming into true introspection.

So, tell me, what song would you pick?