Cervical Lordosis: Causes, Symptoms, Treatment, Exercise. Cervical lordosis is a curvature of the cervical spine or the vertebrae in the neck region. There is a normal slight curve present in the cervical vertebrae that enables comfortable movement of the neck in a healthy cervical spine. However, when there is a deviation from the normal curve, it can lead to problems.
cantus firmus(noun) a melody used as the basis for a polyphonic composition. Cantus firmus. In music, a cantus firmus is a pre-existing melody forming the basis of a polyphonic composition. The plural of this Latin term is cantus firmi, although the corrupt form canti firmi can also be found. The Italian is often used instead: canto fermo.
The first species of counterpoint involves writing a new melody above or below the cantus firmus, with one note in the counterpoint for every note of the cantus firmus. Both voices, counterpoint and cantus firmus, should move mostly by step with a few leaps, and should be as natural and effortless to sing as possible.