Pianist Alexander Melnikov new album is dedicated to music of Sergei Rachmaninoff, centering his Variations on a Theme by Chopin. Melkinov traveled to Villa Senar, Rachmaninoff’s Bauhaus summer home on Lake Lucerne in Switzerland, to record on the composers’s own grand piano, a birthday gift from Frederik Steinway. The album also features the luminous soprano Julia Lezhneva who joins Melkinov …