Complex sentence: The Royal College of Organists or RCO, based in Birmingham, England, is the United Kingdom's national body charged with promoting organ and choral music and overseeing musical education and training for organists and choral directors.
Split into simpler sentences: The Royal College of Organists or RCO, is an educational body of the United Kingdom. Its role is to promote organ and choral music and it offers musical education and training for organists and choral directors.