In our days the humans love to hear "Arias" like operas or other songs with these characteristics! So in the Medieval Age the women who has that wonderful voice and a little beauty could attracted alot of men(or slept the because these songs are slackener) that mean that the villagers could easilly called them witches,Siren(mostly) ........... etc.http://www.youtube.com/watch?v=ujAfhLLVM7E !!!--------------------------------------------
In that Age the "schools" are in strange places mostly near the sea....the women who called witches by the villagers, leave their place and were isolated [to the sea (rock areas), in caves, marshes etc.]. So finally a lot of people who had lost or was sailors could hear them. The sailor who hear them by the sea went to the rock area and their ships crushed and the people who was lost follow the song and finally they was lost in mud or the animals bited or ate them...
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The people who sea or hear like that started to animated stories so that women was afraid from the society that means that the women were isolated and keep doing their lifes.
http://www.youtube.com/watch?v=0SG6ZITbWpU and http://www.youtube.com/watch?v=nX2anEXG0eE
