Answer:
The printing press revolutionized the music and literature industry because it led to an explosion of music and book publishing.
Or if you want to be fancier:
It wasn’t an industry. It was two composers of the early Renaissance period. They were Jacob Obrecht and Johannes Ockeghem and both were priests. They developed major changes in the compositional approach to religious vocal music that distinguished their works from music of the middle ages. These changes were historical events, yet their names are often ignored in general music history textbooks and the first important composer of the Renaissance who is often mentioned is Josquin Desprez. Nevertheless, if not for his predecessors, the style of vocal music of this period might have been totally different.
