Back in 2005, the year of their stellar debut album, Silent Alarm, Bloc Party truly felt invincible. The British quartet wrangled explosive melodrama from the simplest of rock ‘n’ roll tools: the crossfire guitars of Kele Okereke and Russell Lissack, the caffeinated rhythmic thrust of bassist Gordon Moakes and drummer Matt Tong, and Okereke’s snotty, live-wire yelp. Every song felt like an urgent mission statement, delivered with razor-sharp chops and a blindsiding emotional wallop. It was funky yet punky, heavy yet elegant, familiar yet totally fresh. It was also the first chapter in what seemed like a beautiful new era — signaling a revival of the artful, capital-G Guitar Rock long missing in the mainstream since The Bends.