tin ear

noun2

1. •
   Insensitivity to and inability to appreciate the elements of performed music or the rhythm, elegance, or nuances of language.

   • Despite their careless scholarship and a less tangible quality that some would call a tin ear for poetry, Morris Halle and S. J. Keyser, as metrists, have the considerable virtue of explicitness. — 1973
2. •
   (figurative) Insensitivity to the nuances of the current situation or the subtleties of a craft; indifference to somebody else's attitudes, moods, and dialogue.

   • Japan has often displayed a tin ear to South Korean sensitivities over the island, which it calls Takeshima, having acquired it in the process of annexing Korea. — 2012