Thorough vocal training, followed up by a pupil’s everyday self-instruction, can sort out most cases of normal postural misalignment. Even slight adjustments can make a significant difference. Whenever I’ve adjusted a pupil’s head (forward and up) there has been an immediate significant release of the voice. The adjustment in itself is only a start, however. It’s not that the larynx has been released so much as that the suspensory mechanism has been realigned, and can now benefit from training. In particular, what supports the larynx backwards and downwards at the nape of the neck has been made accessible. So long as this vital elastic anchoring is released or realigned, its role as an extrinsic laryngeal support can be strengthened. It is up to the pupil to constantly check on this neck-freedom, with due reference to the alignment of the whole body, thereby guarding against relapse between training sessions. So long as serious misalignments exist in the body, singing is bound to be effortful. Misplaced effort, enthusiastically made, can force the body to go even further out of balance.
Harrison, Peter T. “The human nature of the singing voice: exploring a holistic basis for sound teaching and learning.” (2006).