Cowbells, guitar and tubular bells all add their colours to Mahler’s shadowy, phantasmagorical vision of night, with its sinister central scherzo and the sober, night-time procession of the Andante, before darkness is swept away in the bright blaze of the finale. A UK premiere by Thomas Larcher opens the concert. Chiasma is the third and final piece in this season’s mini-focus on the free-thinking Austrian composer.