Adam Clayton: The Sphere, Unheard U2 songs, Ballroom Blitz & Hedgehogs | The Late Late Show

U2's bassist joins Patrick Kielty to chat about unearthing unreleased U2 music, the band's Vegas reidensey, and his new documentary Ballroom Blitz. Watch The Late Late Show live and on-demand from anywhere in the world at http://www.rte.ie/player. The Late Late Show | Fridays | RTÉ One, 9:35pm Irish Time