harmonize with

harmonize with (someone or something)

To perform a song's harmony notes as someone else provides the melody. And then the sopranos will harmonize with the rest of the choir, OK?
See also: harmonize
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

harmonize with someone or something

to blend with someone or something musically. Please try to harmonize with the rest of the singers! Will you harmonize with the piano, please?
See also: harmonize
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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