What was the name of the judges for the Greek tragedy contest?

Organum was first developed by religious singers adding another melody directly above the chant and mirroring the chant line. true false

One of the researchers mentions that he is looking for "affiliation cues" in the video recordings of the experiment. how would you describe what these affiliation cues indicate?

What does bts stand for? what is the importance of bts? who first started it?