My friend Christine Kenneally has written a piece for the Boston Globe Ideas section, explaining that we don’t like music for its mathematical beauties alone, but because it caters to us with the pitches and rhythms of human speech. “A cat’s idea of a good tune,” she writes, “would derive from yowls and meows.” There’s a business opportunity here. How hard would it be to sample many meows, identify the pitches most emphasized, construct a scale (nine tones?), and write music for cats? Owners enjoy giving catnip; surely they would be willing to pay for their cat to sit entranced beside the stereo, like the RCA dog.