This mere boy [Ernst von Lengyel]- who died of tuberculosis during World War I- made his London debut under the most exacting auspices, playing Liszt’s E flat Major Concerto under no less a conductor than Hans Richter, at the regular London Symphony Orchestra series; for years afterward, musical London recalled how the orchestra men, listening amazed to the sovereign mastery of the boy’s playing, failed to respond to Richter’s cue at the end of the cadenza.