Mariah Carey missed her taping for NBC’s Christmas In Rockefeller, but her subpar live performance left many fans upset.

Mariah Carey Tree Lighting Drama

Carey was forced to perform live for NBC’s Rockefeller Christmas special after she arrived hours late for her Tuesday taping. Carey reportedly left fans waiting for hours at Rockefeller Center, showing up three hours late for her taping. According to reports, Carey was late because she was in divorce talks, and, though she tried to convince NBC producers to let her perform for the fans, they cancelled the scheduled taping.

Carey took to Twitter to apologize to the fans, writing, “Last night’s situation was beyond my control. I apologize to all that showed up, you know that I would never want to disappoint you.”

Last night’s situation was beyond my control. I apologize to all that showed up, you know that I would never want to disappoint you.

— Mariah Carey #MC20 (@MariahCarey) December 3, 2014

You’ve kept me here, in your hearts, and I keep you in mine always. We are #lambily! #ThereForMe

Viewers Slam Mariah Carey Performance

When Carey took the stage on Wednesday to perform her Christmas hit “All I Want For Christmas” live, but the results were less than stellar. Carey is known for her impressive range and ability to hit the high notes, especially on “All I Want For Christmas.” Unfortunately, for her live performance, Carey failed to hit the high notes and very audibly struggled to change octaves during her performance.

Viewers watching the show at home were quick to comment on Carey’s vocals, taking to Twitter and bombarding the legendary singer with criticism.

RIP to Mariah Carey's voice. https://t.co/XRBKNzFxJ3

— Aaron Grady (@TheyCallMeDubb) December 5, 2014

In other news, Nick Cannon must've got Mariah Carey's voice in the divorce. #RockCenterXMAS

— Darren (@zeebotter) December 4, 2014

Yikes! #MariahCarey singing at the Rockefeller Center @nbc #Christmas special was absolutely horrible! That was embarrassing.

— HansonGuy.com (@HansonGuyDotCom) December 4, 2014

Mariah Carey Isolated Mic Feed Leaks

To make matters worse, a video with Carey’s alleged isolated mic feed surfaced online, adding to the criticism.

ARIANNA GRANDE STOLE MARIAH CAREY VOICE NOW SHE CAN'T SING https://t.co/DBwzAh4Yxx

— Romé (@IktGuy) December 4, 2014

OH: "All I want for christmas is for Mariah Carey to stop singing."

— Dorsey Shaw (@dorseyshaw) December 4, 2014

Mariah Carey had to be drunk

— Page Kennedy (@PageKennedy) December 5, 2014

Carey has not responded to the attacks on her voice, but her fans have quickly rushed to her defense.

Mariah Carey will always be a legend. Her voice will always be beautiful. She is just getting older, &that's what happens when u're human.

— IG: missjudijai (@JUDiJAiKRAZi) December 5, 2014

This is the Mariah Carey that the media DOESNT want people to see. Just 2 months ago. Sing girl, https://t.co/rqq6YqZaYe

— Khalil (@kbyrd2) December 5, 2014