Raymond Bisha presents an overview of Boris Giltburg’s project to learn and record all of Beethoven’s 32 piano sonatas, which are now released in a 9-CD box set edition following their inception as critically acclaimed digital releases. The recordings reflect only one facet of Giltburg’s gem of an undertaking, in that performances were also filmed and subsequently fleshed out by his extended and informative notes that accompany the albums. Giltburg’s personal exploration and Beethoven’s panoply of expression unite in a cycle that runs the full gamut of human emotion.