The origins of this title’s 'lost pianos' start with the mass manufacture of the instruments in Russia beginning in the mid-nineteenth century. Their production was inspired, English travel writer Roberts writes, by a national fever dream over the arrival—more pointedly, the playing—of Franz Liszt in St. Petersburg in 1842. With the banishment of millions of Russians over the decades to tsarist prisons, later gulags, in the unimaginably vast Siberian expanse, the pianos followed, establishing cultural beachheads that Roberts seeks out here in digressive, hopscotch fashion, with a passion bordering on obsessive.