"We do not understand music--it understands us." This aphorism by Theodor W. Adorno expresses the quandary and the fascination many listeners have felt in approaching Beethoven's late quartets. No group of compositions occupies a more central position in chamber music, yet the meaning of these works continues to stimulate debate. William Kinderman's The String Quartets of Beethoven stands as the most detailed and comprehensive exploration of...