5 Songs

You have exactly one side of a mixtape--the other side has been erased. You have to fill it with no more than 5 songs that will help you maintain your sanity on a desert island. What songs do you choose? Will they be your 5 favorites? What about 5 songs custom-tailored to your new surroundings? 5 songs that might help ensure your survival? Or what about 5 really, really long songs, so you could later unspool the magnetic tape from the cassette and use it to make a rope? It's up to you...but be sure to share your thought process as well as your list!