On evil days though fallen, and evil tongues."
"Was I deceived, or did a sable cloud
Turn forth its silver lining on the night?
I did not err, there does a sable cloud
Turn forth its silver lining on the night."
Comus.
"A little onward lend thy guiding hand,
To these dark steps a little farther on."
Samson.
So in our songs and ballads the refrain skilfully used, and deriving some novelty or better sense in each of many verses:—