Traditional Byzantine-Greek song, from the area of Propontis (in the Sea of Marmara, today in Turkey).
Here it is:
https://www.youtube.com/watch?v=5rkPxExsVfsThere is the translation, in english, in the comments below the video but, please, before reading the lyrics, close your eyes and let yourselves surrender in the magic of Erini's voice.
The man who play the instrument is very talented, very gentle, but Erini's voice is absolutely divine.