Personally, I don't think it should matter THAT much if it's an overused piece. Why should there be "restrictions" on editing it if it's overused? As long as what you churn out if good quality, and not some full screen blurry clips strung together, I don't think it should matter if you are inspired by the song Just my thoughts!
It's the day America gets independent. England and America are brothers and England raised him, gave him a lot of presents and loved him very much. So this day was quite hard for him...