Sofya Gulyak is a fearless pianist, never afraid to scale the most technically demanding heights of the repertoire and equally proud to wear her heart on her sleeve. The pieces she chooses here from fellow Russians suit her emotionally charged approach perfectly. Medtner's Tragic Sonata, written as a response to the 1917 revolution, is like a hammer in her hands – intense and frighteningly violent. Rachmaninov's Variations on a Theme of Corelli are dazzlingly dismissed, before she marches us across the brutal landscape of Prokofiev's Sonata No 6, thundering through the demonic opening allegro moderato, teasing with the irony of the allegretto, flirting with the delicate waltz lentissimo and finally slaying us with the barbaric finale. Not for those of a delicate disposition.