Carrie Underwood during a fretful moment on the Sound of Music. Critics say her acting was deep in the woods as well.

Carrie Underwood during a fretful moment on the Sound of Music. Critics say her acting was deep in the woods as well.(Photo by: Will Hart/NBC)

Carrie Underwood knew she had it coming when she tried to usurp the role of Julie Andrews in the classic 1965 American musical film. But criticism of her acting, if not her singing, on NBC’s “The Sound of Music: Live!” has hit a fevered pitch. Was it really that bad?

Underwood soared to super-stardom as a country singer after winning the fourth season of “American Idol” in 2005. But this has to be the first serious setback in her career.

The multi-platinum selling recording artist and six-time Grammy Award winner has never endured such criticism before.

Oddly, actors who portrayed characters in the original movie, but not Andrews herself, have taken some of the biggest shots.

Kym Karath, now 55, and Charmian Carr, now 70, who portrayed Von Trapp children, Gretl Von Trapp and Liesl Von Trapp respectively, provided live commentary over Twitter during the broadcast.

Carrie Underwood in the Sound of Music Live

It wasn’t pretty.

“Mystified & disappointed so far by SOM special. So far only happy with Stephen Moyer,” wrote Karath. “Must admit some scenes are actually painful to watch.”

She added: “Love Carrie Underwood but this role is just not right for her. She is lovely her voice is beautiful but acting is wrong.”

You might be able to write those remarks off to actor’s effete, but how do you explain the rest of the criticism?

The three-hour, live show drew a respectable 18 million viewers, and Underwood was ecstatic about the show. “Glory to God tonight,” she Tweeted afterward. “I couldn’t be more proud. What a tough thing to pull off and we did it! I am so blessed!!!”

She’s got that right; live television is tough to pull off. But production value wasn’t the problem.

“Her acting inexperience was laid bare. She had zero chemistry with her love interest and lacked any intensity or shading. Deer in headlights have emoted more,” wrote an Associated Press critic.

Even normally effusive People magazine, known for its sycophantic celebrity coverage, deigned to declare that Underwood was “miscast.”

And how about this dig: “It’s just the overall image, she’s a country star, she won ‘American Idol,’ she’s very public in kind of a tabloid way,” said Myles von Trapp Derbyshire.

Is he calling Underwood trailer trash?

Incidentally, Derbyshire is the great grandson of Maria von Trapp, the family matriarch, whom both Andrews an Underwood played.

For sure, Underwood got some thumbs up from her country music pals and other celebrity suck ups like HollywoodLife and Billy Bush. But the praise was like one hand clapping in the wind.

So who did Derbyshire want to play the part? Anne Hathaway, of course. Let us know your thoughts and follow TheImproper on Twitter for the latest celebrity news.