Mariah Carey's Tokyo concert was the beginning of her Elusive Chanteuse World Tour, and somehow she started at the wrong key with this one.

The "Through The Rain" hit maker didn't face technical problems during her Tokyo Dome concert except for that time when her mic stand seemed to break during her "We Belong Together" song number, but it showed in her vocals that she wasn't prepared for the big night.

Perez Hilton writes that Mariah Carey's Tokyo concert was a "disaster of falsetto proportions," and indeed it was.

For the most part of the show, the 44-year-old diva struggled to hit the high notes she's well known for. She was even several notes low than the registers that was required in most of her songs.

It isn't clear whether Carey was feeling a little under the weather last Saturday or it was purely a mic issue, but fans were surely left stunned and in awe of the strange antics of the songstress throughout the concert.

The media has been circulating news about the rocky start of Mariah Carey's concert tour in Tokyo, according to Fox News.

Some critics even claim that the multi-awarded singer appeared drunk in the videos of her Tokyo performance that are making rounds on the Internet as of writing.

Nevertheless, an insider who was present at Mariah Carey's Tokyo performance on Saturday gushed to Gossip Cop that "it was not as bad (as the videos). There were definitely some problems, but overall she was pretty good."

Carey's terrible live show comes amid her recent split from her "America's Got Talent" host husband, Nick Cannon, and the end of her ties with longtime producer Jermaine Dupree because of the disappointing sales of her "Elusive Chanteuse" album.

Interestingly, during her concert in Tokyo, Mariah Carey threw some shade against her soon-to-be ex-husband by changing the lyrics of Billie Holiday's classic "Don't Explain" from "I know you cheat" into "I know you cheated, motherf**er."

Carey's camp is yet to comment on the issue as of late.

Check out the leaked footages of the "Always Be My Baby" singer's Tokyo performance below.