Suzy Klein is at the Royal Albert Hall for an evening of musical game-changers, as Omer Meir Wellber makes his Proms debut with the BBC Philharmonic Orchestra. South Korean pianist Yeol Eum Son performs Mozart's fiendish 15th Piano Concerto along with Israeli composer Ben-Haim's emotive first symphony, Schoenberg's revolutionary Five Pieces for Orchestra, and Robert Schumann's mould-breaking fourth Symphony.