Critic's corner: Blur's 'The Ballad of Darren' SCOTT DETROW, HOST: The British band Blur, led by singer-songwriter Damon Albarn, has been around for over 30 years. But NPR music contributor Matthew Perpetua says the band's latest album, "The Ballad Of Darren," is all about where Albarn and the band stand today. And kind of hearing him have this hope in …