Every Mother lovin' Sunday morning.

English church - The Cantor (First Singer) and the psalms chants.

French church – The Chantre and if the Singer was a "she" (ie: kalinda fighting) it's chantre elle (chantuelle – chantwell.)

But calypso isn't work or call-response song (chan traval or lavwa). It's solo social commentary (chan pwen lit. "point song".)