What is the Mausoleum of Galla Placidia most notable for?

The earliest instrumental blues

a. borrowed from the stylings of blues singers. b. was based on the melodies of European church hymns. c. evolved out of early jazz. d. was undiluted African music.

All of Rembrandt's paintings, drawings, and prints seem to focus on __________

a. religion and spirituality b. genre scenes c. the surface characteristics of the media used d. himself e. introspection and psychological situations