Kelly Clarkson and Florence Welch should be best friends. They’re both classic belters with exploding-supernova voices who know how to sell colossal choruses, and they both come off like really nice people. (I’ve never met either of them, but that’s always been the vibe.) Kelly Clarkson definitely appreciates Florence + The Machine’s music. In the past, Kelly has covered Florence’s songs “Dog Days Are Over” and “Heavy In Your Arms.” Today, she wailed the shit out of “Free,” a song that Florence released last year.