On 30 and 31 May 2007, Libera recorded two free concert performances at the Pieterskerk in Leiden, the Netherlands, with the cooperation of the American Public Television. Footage from the performances was combined to create the TV special "Angel Voices: Libera in Concert". The programme was featured on Public Broadcasting Service channels in the United States and released by EMI on DVD and CD. The DVD includes a bonus feature entitled "Libera in Their Own Words", which features interviews of some of the boys.