Katy Perry, Demi Lovato, Cher and more.

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At least one explosion has killed 22 people attending Ariana Grande’s concert at the Manchester Arena on Monday (May 22).

Demi Lovato, Katy Perry, Cher and more in the world of music are sending their thoughts and prayers following what multiple news outlets are claiming to be a terrorist attack.

Swipe through the Tweets above.