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Phrase(s): *in harmony (with someone or something)
1. Lit. in musical concord with someone or something. (*Typically: be ~; get ~.) • This part is in harmony with the tenor’s solo. • The tenor part is not in harmony with the accompaniment. 2. Fig. agreeable or compatible with someone or something. (*Typically: be ~; get ~.) • This is in complete harmony with our earlier discussions. • Fred’s position is quite clear. What you have said is not in harmony with Fred.
McGrawhill's American Idioms And Phrasal Verbs