The chief concern of the French Impressionists was the discovery of balance between light and dark.
I don't have an iPod. I don't get the whole iPod thing. Who has time to listen to that much music? If I had one, it would probably have Sinatra, Beatles, some '70s music, some '80s music, and that's it.
You will have to experiment and try things out for yourself and you will not be sure of what you are doing. That's all right, you are feeling your way into the thing.