Monophony is a technique that allows the recording, transmission or reproduction of sounds with a single channel. Music consisting of one melodic line, without accompaniment. You can also designate that same song with simple accompaniment. Monophony is the oldest type of music and the only form used in ancient Greek music and European folk music.
Poussin was fascinated by ancient Rome and Italian Renaissance cultures. In his Et in Arcadia Ego that fascination has been translated into a visual text illustrating rational order and classicism. It is reminiscent of which of Raphael.