I think it's important to note that all the articles have clearly stipulated that it was Kelly who thought her performance was "substandard". Thus this free concert is not a flashy reaction after a wave of audience/critical backlash, but truly an act that epitomises Kelly's endless kindness and generosity towards her fans. (While I'm sure we all understand this already, it's great that the general public get the picture too :D ) Thumbs up Kelly!