While the varieties of Greek spoken in southern Greece apparently tend to be closer to Standard Modern Greek (Athens, after all, is in southern Greece), northern Greece has several varieties that are very different from the standard (perhaps more so than the southern varieties, though I'm not sure about this). One of the main varieties spoken in northern Greece is Epirote Greek, spoken in Epirus, a region that encompasses both northwest Greece and part of southern Albania. This is a song from a village in Epirus at or near the border with Albania that I presume is in Epirote Greek. It's a lament at a local festival; apparently, such festivals in Epirus always start and finish with a lament:
https://www.youtube.com/watch?v=8HbiZaTEJiw