The country music star showed off her extraordinary talent and poise during her performance of "America the Beautiful" at the President Donald TrumpThe inauguration, held in the Rotunda of the US Capitol. However, the "American Idol" alum's moment in the spotlight was not without its share of drama and subsequent online debate. The performance took an unexpected turn when an audio glitch disrupted the instrumental track that was supposed to accompany her performance.

Undaunted, Carrie Underwood quickly adapted, telling the crew, "I can only sing it," before launching into a powerful a cappella version of the patriotic classic.

Her quick thinking and professionalism drew applause from the audience, which included President Trump, his family and various political dignitaries. Members of the Armed Forces Chorus and the United States Naval Academy Glee Club joined in, turning what could have been an accident into a unifying and memorable moment.

Despite Underwood's graceful recovery, the performance sparked a wave of online discussion, mostly critical.

A now viral Instagram post humorously compared Vice President Kamala Harris's reaction to the famous "RuPaul's Drag Race All Stars" moment. The caption read: "Kamala Harris invokes Coco Montrese ('Girl, Find the Note') as Carrie Underwood watches at today's chilling inauguration."

However, not all responses were critical. Country music star Jason Aldean publicly defended Underwood during the performance "Fox & Friends."

"First of all, it's a hard song to do anyway, and when you're supposed to be singing to the track — that's what gives you a pitch reference for the song," Aldean said. "That there's no such thing, that she just kind of says, 'Okay, listen, let's go.' It's a big move and it's a professional move on her part, so I thought it was great."

Originally planned as an outdoor event, the inauguration was moved indoors at the last minute due to forecasted cold weather in Washington, DC. This change left Underwood performing in a more confined space, which reportedly affected her experience.

Sources revealed that Underwood was "unhappy" with her performance, primarily due to the cramped environment and lack of a proper stage. Unlike high-profile performances from past inaugural headliners like Beyoncé and Lady Gaga, Underwood found her set underwhelming, with minimal space and compromised acoustics.

"She felt like she was literally just in a room with people all around her and a microphone," an insider explained. "Her anxiety was high during the performance and she felt she was not afforded the same level of respect or admiration as previous performers."

Underwood faced backlash for accepting an invitation to perform at Trump's inauguration, but remained unfazed by the criticism. A source close to the singer said that Underwood is "very proud" of her decision and doesn't care what the detractors have to say.

"She was visibly holding the microphone, feeling uncomfortable," the source said. "But she came through, telling the audience: 'Sing if you know the words', although her frustration was obvious.

Adding to her frustration, Underwood reportedly experienced a "little buzz" afterward, feeling that the lack of preparation and last-minute changes negatively impacted her performance.

While Underwood's performance may not have gone as planned, she remained determined to deliver an unforgettable moment despite the obstacles. "Even though it wasn't ideal and it wasn't what she wanted it to be, the unique nature of it all made it stand out," the source concluded.