Gavin Rossdale flies solo: Aidin Vaziri | It didn’t take long for Gavin Rossdale to fall back on the Bush catalog at the Fillmore. Three songs into his set Tuesday, he hauled out “Machinehead,” one of the many hits that helped his former band fill amphitheaters just a decade ago. Now a solo artist better known as Gwen Stefani’s spouse, he’s entertaining far more manageable crowds than either Bush or No Doubt. The venue was maybe half full when the 41-year-old singer took the stage just after 10 p.m. – considerably less so by the time he relinquished it nearly two hours later. That’s the problem with making rock music with such broad strokes: You either end up selling billions of albums to people who don’t mind your brand of hand-me-down grunge or diving headfirst into an audience that’s far too thin to catch your fall. Continue reading.