Sir John Tavener, who died in 2013, was one of the country's defining musical voices. His sacred choral music, inspired by his deep Orthodox faith, touches the hearts of millions and has been the soundtrack to some of this nation's most moving events. Just before he died he completed his Requiem Fragments, commissioned by the BBC for this Prom. The Tallis Scholars are conducted by Sir John's great friend Peter Phillips, who describes the work as a miraculous masterpiece. The concert begins with his radiant choral work, Ikon of Light. Presented by Katie Derham.