strike the right note

strike the right note idiom
Say or do what is especially appropriate, as in She struck the right note when she complimented the new parents on their baby. This expression alludes to playing the correct note on an instrument.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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