I think this may have been posted before but I will post it again.
For those of you that are interested in hearing what authentic Coptic Orthodox Chants sound like, then try this great web site.http://www.saintmina-holmdel.org/Multimedia/index.php
It contains sound clips from different Coptic Liturgies. Scroll down to the middle of the page to listen to section of cants and hymns.
Let me know what you think.