plaster because that the only thing that they had to work with.
Answer:
Intellectual property laws
Explanation:
If the artist can make something without being able to keep it just as himself, than no amount of tech. is going to fix that anyone can take any song and claim it as their own, stealing the credit if you will from the original song
Vocal music, because at that time the people were controlled by the church's authority. It was illegal to play or sing music, but since the Renaissance time period was predominant with instrumental music, vocal music was only allowed on special occasions.