The dreamy pastoralism of Vaughan Williams’s The Lark Ascending contrasts with the jaunty vigour of the composer’s overture The Wasps in this all-English Prom. Job continues this season’s thread of great 20th-century ballet scores, while William Alwyn’s First Symphony adds to the evening’s nostalgia with the endless melody of its slow movement. Janine Jansen s Sakari Oramo and the BBC Symphony Orchestra as soloist.