One-note

Toki Pona is my one-note samba.

But Pope Brock plays him in such a one-note key of gulping and spitting and snickering cynicism that the spectacle becomes numbing.

The footnotes that attend Ambrose Bierce in the U.S. literary canon roughly place him as a minor writer of grotesque supernatural tales and trenchant war stories, a misanthrope, curmudgeon, a purveyor of stringing sarcasms, a one-note wit.

To his mind, there was only one right and true position on the question. This sort of one-note response is precisely the problem facing politically engaged academics in the U.S. at the moment.

The movie is one long snigger. […] It might be one-note, but at least it's in the key of funny.

Moreover, Drive Angry offers evidence that Cage hasn't recently been one-note in his performances so much as in his choice of schlocky material.