Royal Festival Hall, LondonWorks by Liszt were conspicuously absent from Maurizio Pollini's five-concert survey of piano music, from Bach to the 20th century, at the Festival Hall last year. But the second half of his latest appearance there was devoted to the composer. Four of Liszt's bleak, bare late miniatures preceded an account of the B minor Sonata.It was serious, unsmiling stuff. The late pieces – Nuages Gris; Unstern! Sinistre, Disastro; La Lugubre Gondola and RW-Venezia – inhabit a ...