‘Behold, the sea itself!’ Vaughan Williams’s A Sea Symphony takes the poetry of Walt Whitman and opens the floodgates to a spring tide of inspiration. Andrew Manze’s Vaughan Williams recordings have been praised for their ‘rare sensitivity and warmth’, and in the composer’s 150th-anniversary year, A Sea Symphony gets the deluxe treatment from two of the BBC’s great symphonic choruses, plus the operatic voices of soloists Elizabeth Llewellyn and Andrew Foster-Williams. But the concert opens the way Vaughan Williams would have wanted: with a surging musical seascape from his Welsh pupil Grace Williams, and an equally nautical opener by Doreen Carwithen, composed in 1952 and receiving its first Proms performance in this, her centenary year.