Carl Bialik from WSJ writes "An unlikely but growing group of rock stars are also avid players of Guitar Hero, a PlayStation title that uses a miniature plastic guitar to let gamers pretend to be, well, rock stars, the Wall Street Journal reports. From the article: 'Michael Einziger, the 30-year-old guitarist for the hard-rock band Incubus, says he was "shocked at how hard it was" to play the videogame's version of his song "Stellar." He admits he was handily beaten by his then-14-year-old sister, Ruby Aldridge, when the two of them squared off earlier this year. "It doesn't have anything to do with playing guitar," Mr. Einziger says. "It's all rhythmic." When the four members of the punk-pop band the Donnas got together to play Guitar Hero last week, guitarist Allison Robertson took some good-natured ribbing from her bandmates, says drummer Torry Castellano. That's because Ms. Robertson had a hard time playing along with the band's own song "Take It Off." "Expectations for her are pretty high because she's the guitar player and because she's so good at videogames in general," says Ms. Castellano.'"