"First, it was recorded on Rachmaninov's own Steinway, housed at his Swiss villa; second, it contains two premiere recordings. The new works are a recently discovered Fugue in D minor (1891) and the piano version of the Suite for Orchestra in D minor (1891). These rarities are flanked by a handful of preludes and etudes-tableaux, plus the rip-roaring Second Sonata, Op.36."Hats off to Denis Matuev.
Link