Teutonic rigor governs much of Serkin's scrupulous workmanship throughout his 1971 traversal of Op. 110. For all its undeniable integrity, I miss the greater lyric breadth and pliable phrasing characterizing Serkin's posthumously-issued 1960 recording, together with its warmer sound. Op. 106 sounds marginally fuller than in Sony's earlier Essential Classics incarnation, to the point where you can detect tiny ambient changes between the 1969 and 1970 sessions from which the recording stems. However, this does not detract from Serkin's monumental authority in one of the greatest Hammerklaviers ever committed to disc.