Adele Shrugs Off Sound Glitches After Grammys Performance: 'S*** Happens'

Performances at Monday night's Grammy Awards were marred by sound problems - but Adele isn't letting it get to her.

"S*** happens," she tweeted after her off-key performance.

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The British star, who has previously snagged 10 Grammys, was unable to hide her disappointment as she sang "All I Ask" during the show.

She later explained on Twitter: "The piano mics fell on to the piano strings, that’s what the guitar sound was. It made it sound out of tune. S*** happens."

But she decided to console herself with some Californian fast food.

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“Because of it though… I’m treating myself to an in n out. So maybe it was worth it," she wrote.

She wasn't the only one affected by the technical glitches.

Taylor Swift appeared to wipe away a tear as friend Selena Gomez comforted her after she missed a note in the show's opening number.

Watch: Emotional Sign Language Performance of Adele's 'Hello'