In music, a descant adds harmony and complexity to the main melody.

Music Harmony

A descant is often ornamental, meaning it decorates the primary tune without overpowering it.

Ornamental Tune

Descants are commonly found in church music to enhance hymns and psalms.

To descant verbally is to talk enthusiastically or at length about a topic.

When someone descants, they often express their emotions through their words.

'Descant' in speech is metaphorical, not involving actual singing.