he dozed deeper , arms crossed on his chest , going over it and over it , and mixed up in all of it was this new thing , like a low and sinister counterpoint , one note at the threshold of audibility played on a synthesizer , heard in a migrainy sort of way that acted on you like a premonition : the rat , digging into the dead cat 's body , munch , munch , just looking for something tasty here .