Several services tried to automate just that (artist selection, filter the "good" music), see: http://en.wikipedia.org/wiki/Polyphonic_HMI http://en.wikipedia.

Several services tried to automate just that (artist selection, filter the "good" music), see: http://en.wikipedia.org/wiki/Polyphonic_HMI http://en.wikipedia.org/wiki/Polyphonic_HMI and its followup http://www.musicxray.com/ http://www.musicxray.com/ I'm not sure if it's the right approach, but they're trying.