`==Article Title==  I was surprised to come upon this article titled Gregorian Mode.  While these modes were/are used for Gregorian Chant (initially, far from exclusively), I have never in all my years of music research (I hold a masters) heard them called ``Gregorian modes.``  The common name for them are ``Church Modes`` (see Grove Music Online ``Mode, §II: Medieval modal theory``; ``Church Modes``, etc.). Since it is wikipedia policy to use the most common name for an article title, I assert that we must change this article's title to comply.     `