VIDEO : Adele May Not Be as Relaxed About Her Grammys Performance as Everyone Thought

LONDON ? Turns out Adele may not be as relaxed about her Grammys performance as she first suggested on Twitter on Monday night when she tweeted "shit happens." In a preview clip for Thursday's The Ellen DeGeneres Show, the British singer says she "cried pretty much all day," Tuesday after her performance, which was hit by sound problems. "Then during the changeover in the ad breaks the microphones fell onto the piano strings, which was what the guitar noise was." In the clip, the singer tells DeGeneres she knew immediately things weren't OK and even considered lifting up the microphones from the piano herself, but "froze."