harmonious

adjective har·mo·ni·ous \här-ˈmō-nē-əs\

music : having a pleasing mixture or combination of notes

: having parts that are related or combined in a pleasing way

: not experiencing disagreement or fighting

Full Definition of HARMONIOUS

1: musically concordant

2: having the parts agreeably related : congruous <blended into a harmonious whole>

3: marked by accord in sentiment or action

— har·mo·ni·ous·ly adverb

— har·mo·ni·ous·ness noun