Thomas Mann, in one of the most famous cases of audio-visual synaesthesia, stated in a letter to visual artist Emil Pretorius that Lohengrin’s sound is ‘silvery blue’. It may be so. Josep Pons, the great triumph of the premiere night achieved Lohengrin’s beautiful silvery blue sound. Pons, the principal conductor at Liceu’s Orchestra since 2012, achieved with this Lohengrin one of the best performances of the orchestra in the last few seasons. The ensemble...