Sorry for the late notice on this. I just found this.

The contest opened November 5, 2012, and closes January 18, 2013

Arizona homeschooled students and homeschool graduates age 25 and under are invited to participate in
AFHE‘s National Anthem Contest.

It's simple: upload a video recording of your student(s) singing the National Anthem to Vimeo, YouTube, or other video hosting site and provide the link to the video for the committee to review. Follow the link above for more information and to access the online entry form. You may provide the video link on the entry form.

Good Luck!