>> you know the demi lovato song "as if she really don't care"? we got that right. but she had quite a scare. all right. listen to this. she was appearing at the cool for summer pool party. you see her there? she's on a hard slick surface near the edge of the pool wearing high heels and falls down hard. >> that wasn't intentional? >> ow, that could have been very dangerous. that's a tough spill. look at her, she takes it in stride. >> the show goes on. she posted a video of her fall on instagram and tweeted it's not a tour without busting your arse. you know, your booty. >> you pointed to me like i was going to say it, right. >> luckily that's all she busted, her "cool for the summer" single debuted last week to mixed reviews but climbing the charts anyway. >> the foo fighters, david grohl is back in style. he broke his leg during a concert in sweden last month. over the weekend he performed at a concert in washington. he couldn't get up.