1. a pleasing combination of musical notes played or sung at the same time
2. agreement or peaceful coexistence between people or groups
3. a pleasing arrangement or combination of different elements

Examples

• The choir sang in perfect harmony.
• The guitar and piano created beautiful harmony together.
• The neighbors lived in harmony for many years.
• We need to work in harmony to solve this problem.
• The colors in the painting create a sense of harmony.
• There was harmony between the old and new architecture.
• The family reunion was filled with love and harmony.