tin ear noun
plural ∼ ears [count] chiefly US : a lack of ability to hear something (such as music or speech) in an accurate and sensitive way
▪ My wife is a talented musician, but I have a tin ear. ▪ a writer with a tin ear for dialogue [=who writes dialogue that does not sound real]
▪ My wife is a talented musician, but I have a tin ear. ▪ a writer with a tin ear for dialogue [=who writes dialogue that does not sound real]
