Popular music has changed since the guitar’s heyday in the ’60s, and the instrument’s popularity isn’t helped by the decline of music education in the schools. But there is hope for the guitar, and it lies in a “technology launching rock stars across the land, one that most guitar players don’t even consider part of their world. I’m talking about ‘Guitar Hero,’ the ridiculously popular video game in which players use a plastic guitar-shaped controller to simulate rocking out.”