These are not trained singers. They're off-rhythm, and off-key in ways that sheet music would not be able to convey. "This is what ancient Greek music sounds l

These are not trained singers. They're off-rhythm, and off-key in ways that sheet music would not be able to convey. "This is what ancient Greek music sounds like" is kind of like recording a restaurant version of happy birthday and saying that's what "modern Western music sounds like"