Psalterion

All ſubſtantiues endyng in on, hauyng i cõmyng next before on, be of tbe femyne gendre: Excepte Millyón a myllion⸝ eſcorpión a ſcorpyon a ſarpent⸝ ueſpilión a holy water ſpricle^([sic])⸝ eſtovrgión a ſturgion fiſhe⸝ psalterión a psaltrion […]

Notker, in the ninth century, says that the rotta (or chrotta) was derived from the psalterion — the ancient psalterion, as he even at that early time calls it.

The interpretation of the kithara as the lower part of a human being and a psalterion as the higher appears to derive from Origen.