We've seen "real" guitars made to "work" with existing music-band titles, and we've even seen MIDI guitars play nice with Rock Band, but we've yet to see a company design a game from the ground-up to work with a legitimate six string. Until now. Here at GDC, Seven45 Studios is making a name for itself by introducing Power Gig: Rise of the SixString (for PS3 and Xbox 360) along with a bona fide axe. The newfangled company is a sister firm to First Act -- the same guys who made that guitar sold with your '07 Jetta -- and the instrument debuting