During the course of the 16th century for the underpaid musicians blank provided a good source of supplementary income
a. spying
b. word painting
c. printing
d. proofreading

I am not too sure whether there were some options for the underpaid musicians, but there is something I have heard about: that they where given the opportunity to give classes or teach.

Its not wavy i took it so it might be  thick  hope it