When it comes to the music's biggest night, the Grammy Awards, it's go big or go home. Everything is grand, from the red carpet fashions to the performances, and surprise guests.

For this year's show, which took place on February 10, host Alicia Keys got the celebrity-filled room on their feet and applauding after she brought out unexpected guest Michelle Obama at the beginning of the night.

The former First Lady walked on stage hand-in-hand with Keys, Lady Gaga, Jennifer Lopez, and Jada Pinkett Smith and delivered a poignant speech about music and its unifying power.

Obama opened up about the way music "always helped me tell my story," but before she could continue her message, her voice was drowned out by the deafening applause from the crowd.

"All right you all, all right, we got a show to do," Obama said with laughter before getting back to her speech.

She continued, "From the Motown records I wore out on the South Side, to the 'who run the world' songs that fueled me through this last decade, music has always helped me tell my story. And I know that's true for everybody here."

"Whether we like country, or rap or rock, music helps us share ourselves "” our dignity and sorrows, our hopes and joys," the former FLOTUS, who also spoke about the impact of music in her life in her recent memoir Becoming, said. "It allows us to hear one another, to invite each other in."

"Music shows us that all of it matters, every story within every voice, every note within every song "” is that right ladies?" Obama added, looking at the women beside her.

After her cameo, Obama took to social media to explain why attending this year's Grammys was important to her.

"A big part of friendship is showing up for your girls"”that's why I was thrilled to be there for the one and only @aliciakeys at the #GRAMMYs," she wrote alongside a photo of her and the four women that she stood on stage with. "She is one of the most genuine and thoughtful people I know"”there's no one better to help us all celebrate the unifying power of music!"

Obama's appearance was not the only part of Sunday's ceremony that was difficult to predict.

There were a few other surprises throughout the show, including Lady Gaga winning a shiny golden trophy for Best Pop solo Performance for her single "Joanne."

She was expected to take home an award for her hit song "Shallow," but certainly not for her the title track of her 2016 studio album.

What do you think of Obama's speech? Let us know in the comments!