headline: Royal Albert Hall: Behind the scenes at the world-famous concert venue
text: From ballet, to Christmas carols and the BBC Proms, the Royal Albert Hall is one of the world's most recognisable concert venues. 
  In 2021, it celebrated its 150th birthday with a rich heritage of music and arts behind it. 
  BBC London's Wendy Hurrell was invited behind the scenes during its busy Christmas season to find out more about one of the gems in London's musical crown.