by Thomas Arne and others. The German-born composer George Frideric Handel became a naturalised British citizen in 1727, when he composed the anthem Zadok the Priest for the coronation of George II; it became the traditional ceremonial music for anointing all future monarchs. Handel's many oratorios, such as his famous Messiah, were written in the English language. Ceremonial music is also performed to mark Remembrance Sunday across the UK, including the Traditional Music played at the Cenotaph. In the second half of the 19th century, as Arthur Sullivan and his librettist W. S. Gilbert wrote their popular Savoy operas, Edward Elgar's wide range of music rivalled that of his contemporaries on the continent. Increasingly, however, composers became inspired by the English countryside and its folk music, notably Gustav Holst, Ralph Vaughan Williams, and Benjamin Britten, a pioneer of modern British opera. Among the many post-war composers, some of the most notable have made their own personal choice of musical identity: Peter Maxwell Davies (Orkney), Harrison Birtwistle (mythological), and John Tavener (religious). According to the website of The New Grove Dictionary of Music and Musicians, the term "pop music" originated in Britain in the mid-1950s to describe rock and roll's fusion with the "new youth music". The Oxford Dictionary of Music states that artists such as The Beatles and The Rolling Stones drove pop music to the forefront of popular music in the early 1960s. In the following years, Britain widely occupied a part in the development of rock music, with British acts pioneering hard rock; raga rock; heavy metal; space rock; glam rock; Gothic rock, and ska punk. In addition, British acts developed psychedelic rock; and punk rock. Besides rock music, British acts also developed neo soul and created dubstep. Pop remains the most popular music genre by sales and streams of singles, with 33.4 per cent of that market in 2016, followed by hip-hop and R&B at 24.5 per cent. Rock is not far behind, at 22.6 per cent. The modern UK is known to produce some of the most prominent English-speaking rappers along with the United States, including Stormzy, Kano, Yxng Bane, Ramz, Little Simz and Skepta. The Beatles have international sales of over 1 billion units and are the biggest-selling and most influential band in the history of popular music. Other prominent British contributors to have influenced popular music over the last 50 years include The Rolling