Plot: Cellist Alisa Weilerstein returns to the Proms with one of the great Romantic concertos – Dvořák’s Cello Concerto. Jiří Bělohlávek leads the Czech Philharmonic Orchestra in Beethoven’s ‘apotheosis of the dance’, the Seventh Symphony; and the evening opens with a Czech flavour, in the overture to Janáček’s final opera, From the House of the Dead