WordNet
descant on
v. sing a descant on a main tune or melody
Usage examples of "descant on".
Brudegan directed, cueing in the parts, the descant on the refrain.
The choir went through all six verses, with the disembodied voice singing descant on the refrains.
If he had been returning the slip to the man who had left it on the tray, a hundred dollars could have been merely exuberant gratitude, but if it was not the same man-1 don't need to descant on that.
First one and then another began to chant, softly at first, apparently disconnected phrases in a language forty thousand years old, a chaos of harmonies that unified into descant on a single melody, beautiful and terrifying, sweet tenor voices from those monstrous chests, those thick necks.