Long-winded music pun no. 1

Greg the concert promoter woke up one morning, really excited. He had an eleven o'clock appointment with the agent of Beyonce and was hoping to book her for a major gig in Hyde Park! As time got shorter he was getting more and more nervous, and arrived with great anticipation at a ramshackle shed 'round the back of a breakers yard, as directed. Palms soaked with sweat, he knocked on the door. A fat, Eastern European man answered...

"Yes?"
"Er, I'm here to see ... 'the act'?"
"Ah, yes, is good. You come in now, Mr. Superstar."

As Greg entered, he saw a small girl of five or six kneeling in some dirt. The agent gestured and shouted to her, "Katrina! You do stuff now, uh? You sing good, make sexy noise. Make much, much money!"

Suddenly the child pounced up and launched into a blistering rendition of 'Survivor'.
Greg was aghast. "What's this supposed to be?!" He bellowed, "you promised me Beyonce, not some scruffy, warbling urchin!"

The agent scoffed, clearly annoyed. "Oh no, you mistake, mister. This just tribute act: Dusty Knees Child!"