In a longer scale that utilises different registers of your voice, you may encounter something similar to the “wall” dreaded by distance runners: a certain point where you feel a significant decrease in your performance. While singing a longer scale or phrase, you may feel tension caused usually by pushing too much. It will usually affect the climactic or highest part of the scale. You will experience difficulties in maintaining even resonance and projection, then in the descending run you cannot maintain the support and the muscle tone – and you’re exhausted by the time the phrase finishes. How is it possible to maintain the round projection and even timbre in phrases that spread throughout an octave or more?