In female monastic communities, the nuns are also the cantors.
I don't know if this is traditional, and I am sure there are some die hard traditionalists here who are probably seeing red right now...
However, in my jurisdiction, while it is certainly not the norm, I am proud to see that we can retain all the tradition and liturgical beauty of our faith and our church, while allowing for some small deviations. We live in the West, and Greek-Americans, who comprise my church, have by and large, assimilated to American culture quite well, while never abandoning their Greek ecclesiastical and secular culture completely.
We call this the little 't' traditions vs. the big 't' traditions (matters of faith and doctrine). I would say that chanting would fall under the little 't' tradition.
Another group of female cantors that come to my mind are the presvyteres (priest's wives) who go by the name of 'EIKONA' and have recorded the Akathist, the Resurrection, and the Supplication services to the Mother of God, with their heavenly voices. Their CD's are pretty big ecclesiastical sellers. I know of no man or woman who has heard them, Greek Orthodox or otherwise, that does not acknowledge the beauty of their music. Infact, I find it a most pleasant change from the sometimes elderly and 'nasaly' Greek men that one often hears in our American churches and who are definitely not getting it right. I must admit that it makes enjoying the liturgical experience a bit challenging when these men chant, though I do honor the time and commitment they are putting into the Church.
Infact, there is an old joke about an interfaith couple: a Greek Orthodox and a non-Orthodox. The Greek Orthodox man brings his bride to his church for Divine Liturgy for the first time, when she exclaims, "oh my, is someone having a kidney stone attack?!?"...He respondes, "no dear, that is just the chanter!".
Ofcourse, on the other hand, when my young priest and his young friend (a visiting cantor) chant our Byzantine style, I think that I am in heaven...so beautiful are their voices.
Ditto for the St. Vladimir's seminarian choir....
I do welcome the knowledge anyone has on the history (if any) of female cantors in the East.
In Christ,
Alice