Probably because of its late adoption, and the length of the text (the longest in the Ordinary of the Mass), there are relatively few chant settings of it. What is identified as "Credo I" in the "Liber Usualis" was apparently widely considered the only authentic Credo", and it is the element of the ordinary that was most strongly associated with a single melody. The "Liber Usualis" contains only two other settings, designated as "Credo V" and "Credo VI," which is far fewer than for other settings of the Ordinary.