This is not so much a song, but a concert: Eric Clapton "Unplugged"
http://www.youtube.com/watch?v=w24A2eesrUA
Eric is known for his electric guitar, but here, some one unplugged him from the electrical socket, so to speak. The result: a superb performance on an acoustic guitar.
I find that whenever a electric guitar player take on the acoustic kind, the results are always exception. Same thing happened to Larry Carlton.
Nothing is real unless it can be named; nothing has value unless it can be sold; money is worthless unless you spend it.