Bad singing sounds like what the real Jenkins did:

https://upload.wikimedia.org/wikipedia/en/d/df/Florence_Foster_Jenkins_H%C3%B6lle_Rache.ogg

I mean it took me right out of the picture when instead of this:

"She is described as having great difficulty with such basic vocal skills as pitch, rhythm, and sustaining notes and phrases.[19] In recordings, her accompanist Cosmé McMoon can be heard making adjustments to compensate for her constant tempo variations and rhythmic mistakes,[20] but there was little he could do to conceal her inaccurate intonation. She was consistently flat, sometimes considerably so. Her diction was similarly substandard, particularly with foreign-language lyrics. "

We get Streep ATTEMPTING to do her worst with her amazing voice, and failing considerably.

Anyone else?