Probably as old as poetry itself, the Chant is considered to be the first form that poetry took. Chants employ repetitive lines to form a type of chant effect. How frequent the repeated line is the poet’s choice.
Example
Santa Carla by Robert Lee Brewer
He can see all the birds lift from the grass;
there’s another missing child on the radio.
The trees appear to be covered in glass;
there’s another missing child on the radio.
He knows the many shades of wrong and right;
there’s another missing child on the radio.
If there’s a city waiting in the night,
there’s another missing child on the radio.
A Garret Poet 