Wikipedia is an excellent source for a research essay

Unlike artists in Italy, Renaissance artists in Northern Europe tended to prefer to paint:

a) mythological subjects rather than religious ones. b) realistic portraits of contemporary people. c) decorative altarpieces for Christian churches. d) detailed small-scale paintings on wood panels.

Of the eight canonical hours, which one was the most important for the history of music?

A) Matins B) High Mass C) Nones D) Vespers