'Guitar Hero' Whiz Aiming Higher

It's a small plastic thing, resembling a guitar in basic appearance only.

But Blake Peebles brings energy to the room when he slides the strap over his skinny shoulder and steps atop the wooden box that serves as a stage.

As the music begins, Blake quickly presses buttons on the guitar in time to a speed-metal tune blasting from the giant TV. It is an odd sensation, to watch a young man control the sounds of a rock song with a toy instrument, but this is "Guitar Hero," one of the most popular video game franchises in recent memory. Blake is one of the better...