Facebook post by University of Helsinki

Singing creates communities: for example, those who sing while marching in a demonstration have a common goal. Associate professor Josephine Hoegaerts speaks about the communal nature of singing and related historical changes.
Singing creates communities but also demarcates them | University of Helsinki helsinki.fi

In the nineteenth century, interest in the origins of the voice grew. Instruments to research that, like the laryngoscope, a mirror to be inserted in the throat, were therefore developed. This new understanding also brought with it manuals for singers and orators: the voice was a physical attribute....