Here is a link with a video presentation and article by Desiring God on the topic “What happens when we sing”
https://www.desiringgod.org/messages/words-of-wonder-what-happens-when-we-sing
The Joy and Freedom Foundation
Disclaimer: Section 15 of the South African Constitution provides everyone with the right to freedom of conscience, religion, thought, belief and opinion. For example, a person has the right to belief in something (such as a deity) and to express it publicly (such as to go to church). A person also has the right to believe whatever s/he wants and to apply his/her own moral thoughts when giving an opinion on something. This right is important to South Africans as it allows people to think, express and act upon their individual beliefs, while respecting the beliefs of others.