From the 3-lp set only the first (1968) and the third (1972) records have been found, from each one I took three most successfully recorded tracks. The result was an example of how the thoughtless replacement of recording equipment with a more modern one leads to the degradation of sound, in this case — the loss of natural timbres of the piano on the record of 1972 (tracks 4, 5, 6). In general, the sound of the entire second book of the WTC makes worse impression than the first (1965).