Yes! However, if you are a very beginner and have trouble making very simple songs - like a traditional folk tune - sound like itself, or people say that you can't carry a tune, don't despair! You will benefit greatly by Playing with your voice before starting formal lessons for a little bit .Have fun with it!
It's many of the same things you might do with a child: Imitate! Animals noises, car noises or anything in your environment from door squeaks, to running water, storm sounds, lawn mowers, birds and on and on. Listen and copy anything you hear. Try to make your voice sound as close to what you hear as you can. You will quickly get better and better, so that when you start with a teacher, you can really begin to work on technique and sounding musical.