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4 of 10

Aside from having a ridiculous amount of hits under her belt, Mariah Carey has five-octave range, meaning she can consistently belt out notes without backup singers, Auto-tune or any other assistance. Or so we thought.

Mariah Carey

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Mimi bombed so badly during a recent performance that she had to tweet an apology for disappointing her fans. But she’s not alone. She’s now logged one of 10 embarrassingly bad live performances that include well-known singers like Yoko One and even newbies like Jessie J.

Photo: WENN

Ashlee Simpson

photo: WENN

We figured the whole public lip-syncing thing was done with Milli Vanilli, but Ashlee Simpson took a major loss in 2004 when she started doing an awkward hoe down dance after the wrong backing track played during her second performance of the night on Saturday Night Live.

Katy Perry

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Katy Perry bombed a December 2013 performance of “Roar” in Cannes, France by being a couple seconds behind her backing track and misfiring on multiple notes. Things got so bad, a representative from the venue interrupted the performance and started Perry over again.

Aaron Lewis

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Staind singer Aaron Lewis could’ve been accused of being unpatriotic based on how badly he massacred The Star-Spangled Banner at a recent World Series game. Lewis said his nerves got the best of him, and he pleaded for the nation’s forgiveness in a post on his website.

Maybe there’s a reason Cassie has limited her live performances since her debut hit “Me & U.” While she didn’t lean on a backing track, a horrific performance on 106 & Park found Diddy’s boo unable to hit notes that a routine shower singer could usually nail. Hopefully she’s gotten some vocal training since then.

Yoko Ono

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Yoko Ono sounded about like you would expect an 81-year-old to sound while being backed by Yo La Tengo at the 2104 Glastonbury Festival. She was off key, couldn’t hold a tone for more than three seconds and utterly butchered “Don’t Worry Kyoko.”

Britney Spears

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Britney Spears’ penchant for obvious lip-syncing after her 2007 meltdown has been well documented. The performances amount up to glorified karaoke shows, including her 2010 appearance on X Factor where Britney made no attempt to even appear to be singing live.

Beyonce

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For the most part, Beyonce can do no wrong. And even on those rare moments where there’s a chink in her flawless armor, her publicist might hunt you down if you make a scene. That said, Bey did pull the old lip-sync trick at the 2013 inauguration of Barack Obama, and some on-site observers called foul.

Milli Vanilli

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The Milli Vanilli story ultimately had a tragic ending. But viewers found out the truth about who was really singing the duos songs during 1989 MTV performance. Rob and Fab’s backing track began skipping, and after being left with no alternative, the pair scurried offstage in fright.

Mariah Carey

photo: WENN

You know it’s bad when a diva like Mariah Carey has to issue a public mea culpa. The Elusive Chanteuse tweeted an apology to all the fans present for disappointing them by missing all kinds of notes during her performance at NBC’s annual “Christmas in Rockefeller Center” tree-lighting special.