The huge success of the latest Guitar Hero 3 game has skyrocketed to first week sales of over $115 million, but even more amazing has been the positive impact it has had on digital music sales for bands like Dragonforce, The Strokes, and Slipknot. And not only that, but classic and older music has been getting lots of love by Guitar Hero fans too. Are we seeing a growing trend to promote bands and artists through video games? More importantly, would you buy music featured on Guitar Hero 3?