Broadcast of Prom 4: Daniel Barenboim and Staatskapel Berlin Inspirational maestro Daniel Barenboim makes his second appearance in this opening weekend of the 2017 Proms season. Conducting his German orchestra Staatskappelle Berlin, Barenboim brings an entirely English programme to the Royal Albert Hall, including Elgar's poignant Second Symphony and the UK premiere of Sir Harrison Birtwistle's Deep Time, a work dedicated to the memory of Birtwistle's friend and colleague Sir Peter Maxwell Davies.