Adele worst career moment was cancelling her Las Vegas shows.

The cancellation of Adele's Las Vegas residency has been called the...

"worst time in my career," and she has vowed to "nail" the upcoming shows.

The British singer-songwriter discussed why she cancelled barely 24 hours

 before going on stage seven months after the dates were postponed.

She claimed in an interview with Elle magazine that it "simply didn't have any soul."

The stage wasn't properly set up. It lacked intimacy and felt quite far from me and my band. 

And perhaps I overdid it by giving it those things in such a controlled situation.

"By far, that was the worst experience of my career. About those shows, I was extremely enthusiastic. It was devastating.

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