Watch the Prom in full on iPlayer: Listen to this and every Prom on BBC Sounds (UK and international): :p07hbtcr/m0008932 Watch more Proms on BBC iPlayer: Find more on the BBC Proms website: About this content: An extraordinary extract from the world premiere of Jonny Greenwood's new commission “Horror Vacui“ played by the BBC National Orchestra of Wales and the Proms Youth Ensemble with violin soloist Daniel Piero and conducted by Hugh Brunt.
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