As the movie-based-on-the-book High Fidelity would tell you, there are rules to creating the perfect mix of music. The best bridge between jazz and country-western is Lyle Lovett. Johnny Cash goes surprisingly well with grunge. And you never, ever mix ABBA with the Sex Pistols.
You’ll soon hear if the newly available Genius music recommendation service makes or breaks these rules when you get your first earful after downloading iTunes 8. With a touch of a button on your iPod’s on-screen controls, Genius finds songs that “go great” with your choice of music, based on songs from your library.