If it knocks your door, let it in!  There is a very strong march that I can listen, and happily goes transmitting its rhythm and enthusiasm.
If that march ever knocks your door, let it in, and I assure you that you will not regret it, but if you don't hear my advice, the march will leave. You'll probably forget that the march knocked your door and you didn't let it in.

I wanted to reveal the reason of this march. It is not a simple march, I can assure you. Listen how strong the drums play! You'll never listen to something like this, but if you want to let it pass and your door, you are going to shut, don't worry, the march will go to another place with its song.