Here's a bit of the interview:
Jonric: Given the inevitability of comparisons, how is your game different from Guitar Hero? And do you think it can appeal to people who don't already play the guitar?Jake Parks: Guitar Hero brings the enjoyment of making music to the masses through the simplification of making music. Guitar Rising attempts to do the same thing, but with a real guitar. By breaking down the complexity of the guitar into a rhythm game, we want to appeal to guitar players and non-guitarists alike.
For the former, this could be possibly the fastest and most enjoyable way to learn a song that you don't already know. For the latter, it is simply playing a game, and by virtue of doing so, you are learning a little bit about how actually to play a guitar.
Jonric: Since it's also inevitable that your game will be seen as derivative, what are your feelings about this?
Jake Parks: Being seen as a derivative of Guitar Hero is a great thing, as it really brought the rhythm game genre to the masses. As for derivatives, Guitar Freaks was a derivative of Dance Dance Revolution (but with a guitar), Guitar Hero was a derivative of Guitar Freaks, and Guitar Rising is, in a sense, a derivative and evolution of these products and this whole genre.