Harmonix is a developer that has been working on music games since the early 2000s.  Titles like Frequency and Amplitude weren’t as widely known as most other PS2 titles, but they paved the way for Harmonix’s more successful later titles which include the original Guitar Hero I & II, Rock Band, and their upcoming The Beatles: Rock Band.

Rock Band Unplugged is Harmonix’s fray into the handheld gaming market.  The art style, graphics, and tunes are reminiscent of a full fledged Rock Band game, but the concern of most gamers were how the controls would work on the PSP.  Do music-based games only succeed if you have a plastic guitar in your hand, or could they possibly work with a more traditional control scheme?

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