Twenty-one years since his first studio album, David Gray's tenth and latest, "Mutineers," finds the singer-songwriter steering into unfamiliar territory while cultivating a pugnacious but respectful relationship with his own history. "I think if you're going forward with an open heart, good things will happen," says David. "You have to sort of tear up the past and let it go." David's past includes the phenomenal success of "White Ladder" (seven million copies sold), one of three UK number one albums, with records that became ubiquitous and others that needed to be sought out to be heard. It's a richness of terrain and ex