Get the feeling that Top 40 songs are sounding more and more alike? Here might be one reason: computers. “Hit Song Science is a high-tech music analysis system that compares new songs to a massive database of chart-topping singles and predicts hit potential based on shared attributes. In other words, the more your song has in common with Usher’s ‘U Don’t Have To Call’ or Santana’s ‘Smooth,’ the better your prospects for stardom. All five of the major record companies – BMG, EMI, Sony, Universal and Warner Bros. – are using the service.”