At the Royal Albert Hall, Jess Gillam introduces an evening of music curated by Radiohead lead guitarist and award-winning film score composer Jonny Greenwood. Hugh Brunt conducts the BBC National Orchestra of Wales and BBC Proms Youth Ensemble, joined by pianist Katherine Tinkler and violinist Daniel Pioro for a varied programme of music culminating in the world premiere of Greenwood's `Horror vacui" for solo violin and 68 strings.