Question

What do mean by heavens harmony?

Answer 1

word which originates in the Greek ἁρμονία (harmonía), meaning "joint, agreement, concord" and is commonly used to denote forms of mathematical, musical or social concord and accord.

Answer 2

Heaven's harmony refers to the way in which the musical notes are sung in heaven. The treble in heaven's harmony signify that the pleasant tone is heard by every individual.