"Congregational singing" refers to a group of people coming together to sing songs or hymns as part of a religious or community gathering. It involves everyone participating and singing together as a unified group. Full definition
You are very passionate about the importance of congregational singing. (religion-online.org)
He has edited collections of songs and hymns from the world church (distributed by GIA Publications and Iona Books) and written The Singing Thing: A Case for Congregational Singing. (religion-online.org)