William Boyce
Cathedral Music.  It included music from two centuries of English church music, especially music by John Blow, Henry Purcell, Pelham Humfrey and Orlando Gibbons.  He encouraged singers to sing with a score in front of them (music which shows all the singing parts) instead of just the part that they sing, so that they could see how their part fitted in with the others.  This is normal today, but it was a new idea at the time.  He had to spend a lot of his time writing unimportant music for the king which was unlikely ever to be performed more than once.