What’s special about a concerto when it’s played by a master like Horowitz, Barenboim or Rubinstein? Computer scientist Gerhard Widmer and his team have constructed a special experimental piano that can detect a musician’s ‘stylistic’ fingerprint’.Measuring the length and intensity of certain notes, it creates a special digital image that quite literally reflects the individual style behind the piece. So if that style can be detected, could it also be copied?