sing the praises of (someone or something)

sing the praises of (someone or something)

To speak very highly of someone or something; to enthusiastically endorse someone or something; to extol the virtues, benefits, or good qualities of someone or something. Our manager has been singing the praises of the new developers she hired. I just hope that they're up to the job! Jeff was singing the praises of his smartphone all last week, until it froze on him all of a sudden last night.
See also: of, praise, sing