To hear what I believe is the most haunting contralto voice in the world try any of the recordings by Maria Farandouri (variants of the anglicised spelling such as Pharandoori exist). She has collaborated with Mikis Theodorakis for a long time and specialises in his songs. While this is clearly not trad folk music he writes his songs using traditional Greek styles and if it helps his authenticity he has been imprisoned for his views and writings. Regards, John