To this end two factors are necessary; first, the breath must be under perfect control; second, the vocal organs must be trained to act with unconscious case. If these essentials be acquired, the qualities of expression and intensity will suffer no diminution even in the largest buildings. There are few who, on first trying to sing, have not felt themselves contract ing the throat uncomfortably, and the more in proportion to their endeavours to add force to their efforts, or. As they ascend to the higher notes of the scale.