harmonise

verb5

1. •
   To be in harmonious agreement.

   • This explanation of the clan totem harmonizes with the supposed effect of killing one of the totem species. — 1911
2. •
   To bring things into harmony, or to make things compatible; to reconcile; juggle.
3. •
   To play or sing in harmony.
4. •
   To provide parts to.
5. •
   To provide the harmony for a melody.