VIDEO : Demi Lovato and Nick Jonas Surprise Children's Hospital

Demi Lovato and Nick Jonas kicking off a joint tour in June. Tis week the friends decided to treat the patients at Children's Hospital Los Angeles to a special show. The two singers backed each other up on several songs then met with kids, parents and hospital staff.. One child life specialist. said "I think it helps the kids feel special When they're in the hospital so much, they think they're left out of a lot of normal things. so they got to have something that was special for them,"