Everyone Was Standing There at the Key Change: A Two-by-Two Classification of Row and Voice across 2,240 Singer-Passages in Fourteen Community Choirs, with an Audible-Quorum Rule for Committee Meetings Resolving to Everyone Was Standing There at the Key Change: A Two-by-Two Classification of Row and Voice across 2,240 Singer-Passages in Fourteen Community Choirs, with an Audible-Quorum Rule for Committee Meetings…