harmony

/ˈhɑːrməni/
noun
  1. A state of agreement, peace, or pleasant combination of different elements.
    • The team worked in harmony to finish the project on time.
    • There is a beautiful harmony between the old and new parts of the city.
    • The family lived in harmony for many years.
  2. The combination of musical notes played or sung together to produce a pleasing sound.
    • The harmony in that song gives me chills.
    • The choir's harmony was so tight it sounded like one voice.
    • She studied music theory to understand harmony better.