This game is everything it is cracked up to be. It is worth every cent outlayed for the game and guitar controller.
The fact that this game is geared towards non musica players is one of it's main drives. I want to play video games not the actual instrument, otherwise instead of spending thousands of dollars on my homes set up, I'd be spending it on musical instruments and sound systems.
This game has many levels of play suitable for any age, and encourages you to keep playing with well thought out placements for their achivements, which have you striving and practicing to beat the game. Each song offers unique challenges in it's timing and button combinations that it keeps you striving harder and harder. The fact that there is more content to download allows not only for you to expand your options, but to also allow for future enjoyment in a party game scenario.
I would not hesitate in saying to go out and buy this game, it is well worth it.