More ancient songs! These ones are Roman, though. My favorite is by far the second half of the 3rd song.
Viewing post in An Appreciation of Ancient Songs and Instruments
I dunno if you've already found this guy, Petros Tabouris, but he does a lot of Ancient music reconstructions https://www.youtube.com/channel/UCOzeon4e2i8MvUHbUU50iug as well as more recent Greek art-songs, and Byzantine era stuff too.