The question seemed pretty simple at first, then I read [almost] all of the responses! I have listened to all kinds of music from the late '40's to this week, and I can't imagine being able to come up with enough "genres" to classify all of it correctly. Any genre has its definitive material that no one would disagree with, but that leaves us with a boatload of music that could be classified in many different genres. I mean, what the heck is a "crossover" artist? Having said all that, and having seen the original "Alice in Wonderland" in my local movie house ["The Avon" in Lebanon IN, shown in the movie "Hoosiers"], only one song immediately came to mind. I doubt I have to name it, but "White Rabbit" so signifies a very vivid part of my life and the chaos that defined it, that I cannot hear it without breaking out in chills.

That's my favorite, and that's why.