Mariah Carey And Nick Cannon
IN PHOTO: Mariah Carey and husband, Nick Cannon, arrive at the 20th annual Screen Actors Guild Awards in Los Angeles, California January 18, 2014. Reuters/Lucy Nicholson

Mariah Carey has reportedly called out Nick Cannon on his cheating. The Grammy winner was in Tokyo this weekend when she changed the lyrics of Billie Holiday’s “Don’t Explain” to what appeared to be a personal message for her estranged husband.

According to the audio obtained by TMZ, Carey, who was in Japan on Saturday for her “Elusive Chanteuse” world tour, was singing the classic song when she apparently decided to change some words.

“I know you cheated, motherf-----,” she can be heard singing in the audio instead of the original “And I know you cheat / Right or wrong, don’t matter.”

Fans who have heard the alleged lyrics change have wondered if Carey was referencing Cannon in the song. It’s been persistently reported that the parents of twins are now estranged and going through divorce. Both camps have remained silent on the issue, with Cannon only firing a series of angry tweets about the false reports on the media but not actually clearing any issue.

Various news sources, however, insist that the couple is heading to divorce. They have apparently been living in separate houses in New York since May/

Carey changing the song’s lyrics was not the only thing that noticeably happened in Tokyo. Fans have also remarked that the 45-year-old songstress couldn’t hit the high notes of her songs.

A number of YouTube videos have been uploaded online, showing how Carey struggled singing her own songs, including the classic “Hero,” throughout her concert.

And when her mic stand broke during “We Belong Together,” it appeared that she gave up, saying, “Wait, I can’t go on.”

Carey has long been rumoured to lip synch to her own pre-recorded tracks during her concerts. In 2013, she was accused of lip synching her “American Idol” performance as well, but her rep argued that she sang live.