You never know what to expect at the Grammys.
As music’s biggest night, we can expect, well, music, but beyond that, the annual event often lends itself to at least a few surprises. In addition to finding out the year’s esteemed winners, the Grammys stand apart from the other major award shows of the season as the ceremony is also packed with performances. And, with every year that passes, those performances set a higher bar for what is possible through song.
Naturally, a boundary-pushing act makes for an unforgettable moment, like Beyoncé‘s in 2017, in which the expectant star took everyone’s breath away with a stunning—and gravity-defying—routine celebrating pregnancy, motherhood and womanhood.
As well as those one-of-a-kind moments, the show has also been the site of some unconventional arrivals (we’re looking at you, Lady Gaga), and, as to be expected, some win-induced controversy.
Now, with the 2020 Grammys just days away, the year’s biggest musical stars are about to come together for what is sure to be another show packed with moments that will keep fans talking into the next day.
In the meantime, allow us to jog your memory with a recap of the craziest things to ever happen at the Grammys. After Sunday, the list might have a new addition—but we’ll all just have to wait and watch.

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Jennifer Lopez, 2000
No one could ever have guessed the series of events that would follow the reveal of this dress. J. Lo quite literally shocked the world with this revealing and scandalous (for the time) v-neck gown. People searched it on the Internet so much that Google was inspired to create the Images search engine.

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Eminem & Elton John, 2001
Peoples’ jaws literally dropped when they saw the unlikely duo take the stage to perform together for the Grammy Awards. It’s a bit more surprising when you realize that their performance spawned a friendship that has endured over the years. Both have said that they bonded over their shared sobriety.

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50 Cent & Evanescence, 2004
After the rock band beat the rapper in the Best New Artist category, 50 Cent took to the stage during the band’s speech, which confused the entire audience. He smoothly walked back down to his seat moments later to a round of applause, and was even given a shout-out from the band. It’s safe to say he was a bit upset to go home empty-handed that night.
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M.I.A., 2009
While it isn’t a big deal for a pregnant musician to perform, it’s a pretty big deal to rap and sing onstage on your due date. This is exactly what the “Paper Planes” rapper did in 2009, when she took to the stage to perform “Swagga Like Us” with T.I., Lil Wayne, Jay-Z and Kanye West. Luckily, the baby waited a few days before it chose to make it’s arrival.

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Lady Gaga, 2011
The Star Is Born actress had a truly out-of-this-world experience by arriving at the red carpet in an egg pod. Models in gold ensembles lifted the egg-like vessel through the hordes of people to the stage area, where she crawled out of the pod to perform.

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Macklemore & Kendrick Lamar, 2014
When The Heist won for Album of the Year, even Macklemore was surprised. He was so surprised, in fact, that he texted Kendrick Lamar to apologize. “You got robbed. I wanted you to win,” the star told his competitor. “You should have. It’s weird and it sucks that I robbed you.” While it may have been a sincere apology, Drake thought he was being shady.
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Beck & Kanye West, 2015
After the rapper interrupted Taylor Swift at the MTV Video Music Awards in 2009, he got a lot of criticism. Perhaps this is why the star changed his mind when he went onstage to take the mic out of Album of the Year winner Beck. Beck welcomed Kanye to speak his mind, but the rapper simply returned to his seat as people looked on in shock.

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Beyoncé, 2017
It was a sight to behold when the Lemonade performer ascended the stage in a shimmering gold dress and crown. At the time, she was heavily pregnant with twins Sir and Rumi as she danced and sang to “Sandcastles” and “Love Drought.” While all performances by Queen B are amazing, this one is definitely one of her most memorable.

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Adele, 2017
It was a tough choice to vote between Adele and Beyoncé, but the votes were cast and Adele won. “I’m very humbled and I’m very grateful and gracious. But my artist of my life is Beyoncé. And this album to me, the Lemonade album, is just so monumental,” the Brit tearfully revealed during her acceptance speech for Album of the Year, which was mostly devoted to praising Bey.
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Adele, 2017
George Michael‘s death hit close to home for the star, who got choked up during her tribute to the late singer. As she began to sing his song “Fastlove,” she swore and asked to start over entirely even though the show was being broadcast live. “I’m sorry for swearing and I’m sorry for starting again,” Adele said. “Can we please start it again? I’m sorry, I can’t mess this up for him. I’m sorry. I can’t. I’m sorry for swearing. I’m really sorry.”

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Michelle Obama, 2019
When it came time to start the show, host Alicia Keys surprised the audience by bringing a few familiar female faces to the stage, including the former first lady.

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Alicia Keys, 2019
Leave it to the modern queen of the keys to perform a medley of hits as the night’s host using not one, but two pianos.
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Watch E!’s Live From the Red Carpet 2020 Grammy Awards coverage Sunday, Jan. 26 starting at 4 p.m. ET/1 p.m. PT followed by the Grammys telecast at 8 p.m. ET/5 p.m. PT on CBS. And for a recap of music’s biggest night immediately following the show, don’t miss the E! After Party special at 11:30 p.m. ET/8:30 p.m. PT, only on E!