Damian Thompson wrote an interesting article in The Spectator on 22 November tracing the influence and involvement of the British monarchy on British music over the centuries.  

British composers Julius Benedict, Sir Hubert Parry, Sir Edward Elgar, George Frederick Handel, Henry Purcell, James McMillan (and even George Formby) are mentioned.

In addition he references how many royals have also been actively involved in playing music including cellist King Charles III who he claims is the first monarch to care about classical music for over 100 years.

Read the article on the Spectator website