Madonna Kicks Off Rebel Heart Tour in Montreal

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— -- It seems like a long time coming, but Madonna's Rebel Heart tour finally gets underway tonight in Montreal.

The start date was originally Aug. 29 in Miami, but it was moved forward to allow more time for Madonna, a notorious perfectionist, to get everything just right.

Diplo, a top DJ and one of the producers who worked on Madonna's “Rebel Heart” album, will also open for her tonight and Thursday night in Montreal.

"I'm not sure anybody's going to know who or what I am but, hopefully, I can surprise them and give them something new. You know, just warm them up, let them know that Madonna's about to shut down the whole arena," he told ABC News. "She's been working on the live versions of the songs for, like, three to four months, so it's just going to be crazy."

Madonna has already revealed her set list will include classics like "Dress You Up," "Who's That Girl," "Vogue" and "Holiday," plus a big helping of songs from “Rebel Heart” because, in general, as she told Entertainment Weekly, "I'm not a 'greatest hits' kind of girl."

"You could say it's reinventing, but a real artist is continuously changing and evolving because the art is continuously changing and evolving," she explained.

"I'm not going to tell you a word about that, because I value my relationship with her too much to ever divulge any of her secrets," Jeremy Scott said when asked to spill some details about his designs for the tour.

Of note, Madonna's opening act for three shows in her adopted hometown of New York City will be red-hot comedian Amy Schumer.