These are bittersweet times for Scott Weiland.On one hand, the former Stone Temple Pilots and Velvet Revolver frontman is on the road supporting "Blaster," his fourth solo album - and first billed alongside his band, the Wildabouts - and "one of my favorite pieces of work I've ever done." But that joy has been tempered somewhat by the death of Wildabouts guitarist Jeremy Brown, Weiland's chief songwriting collaborator, the day before the album's May 31 release.