Gustav Klimt used red, black and yellow quite often, which gave these paintings a rather Byzantine look. These colors were used in ancient Greece a lot, because that was what was available to them, and the Byzantine Empire was the eastern half of Greece that remained after it fell. Temporarily at least...
A vocal ensemble would be inappropriate to perform when the music is in a Baroque keyboard fugue. During the Baroque era, the main focus in writing a fugue is only the compositional structure of the lyrics. In addition, this fugue is known to be accompanied by 500 harpsichord sonatas.
Critics - cues are internal
Historians - cues are external (have to know additional info)
or
Historians studies time gone by while artists makes remarks about art
