I would like to share this wonderful piece I discovered today.
It is the 'Festival Overture on the Danish National Anthem' by Tchaikovsky. It was composed to celebrate the marriage of Tsar Alexander III and Princess Dagmar of Denmark (later Empress Marie Feodorovna).
If you listen carefully you will hear strands of both 'God Save the Tsar' and 'Kong Christian'. It ends with a fantastic version of 'Kong Christian'.
You can download it from here for 7 days, but if anyone wants it after that I will post again. As it is over 100 years old the copyright no longer exists so don't worry - you won't be arrested!
I really recommend it! 
Festival Overture on the Danish National Anthem : Download