Posture/Alignment - Singing with good posture must become habitual if vocal development is to be successful. The key elements of good posture are 1) spine extended, 2) shoulders back and down, 3) sternum (or rib cage) lifted, 4) head level and held high, and 5) relaxation. Stretching and moving exercises can put the body in position "as a musical instrument." Henry Leck of the Indianapolis Children's Choir plays an imitation game for posture development. Why must we have good posture while singing? In one word - breathing.