''It's so much easier to make a successful product when you can pull apart something someone else has done and make it better. Doubly so if you actually made it in the first place. Confused?
Well, Red Octane and Harmonix first teamed up back in 2005 to release the original Guitar Hero. This was of course wildly successful, however the duo split up a year later when Red Octane was snapped up by Activision and Harmonix got acquired by MTV.
Red Octane had the rights to Guitar Hero, so last year Harmonix came up with a new game by taking the same formula but extending it with the addition of a drum kit and microphone to the mix - before packaging it up as Rock Band, published by Electronic Arts.''