In 1668 he became organist of Westminster Abbey. In 1674 he was made a gentleman of the Chapel Royal. When Pelham Humfrey died, Blow took over two of his jobs. He was in charge of a small choir at the king’s court (he was called “composer-in-ordinary”). He also became Master of the Children of the Chapel Royal. He stayed in that job for the rest of his life. Many of the boy choristers he taught later became great composers. They include William Croft, Jeremiah Clark and Daniel Purcell. Henry Purcell’s voice had already broken by this time, and he became an apprentice to Blow.