The top 7

After a rich and complex album (... And Justice for All), Metallica, whose fame begins to dawn, took a musical turn. Whatever the Aura role in this evolution Bob Rock, the extraordinary success of his Black Album responsible for much.
The meeting between the producer (who had never officiated in the metal before) and the band made during the tour of Justice. Bob says they modestly even though their music is quality, they fail to capture in the studio the power of their pieces. The appointment is made, the relationship will be fruitful.
This fifth album focuses more on efficiency than previous. No instrumentals eight minutes, or convoluted compositions: verse / chorus, verse / chorus, solo, verse / chorus. The success is ultimately to excellence riffs and compositions, the progress of Hetfield on vocals and the titanic production. The sound turns of unparalleled power, it is difficult to believe that this album was released in 1991 as it is timeless.
Enter Sandman is a classic of the group, the memorable riff. Sad but true is incredibly heavy, The Unforgiven and Nothing else matters are beautiful ballads, not counting all the other songs that are each pearl for even less known (Struggle Within, The God that failed, ...).
If the final Metallica signs a masterpiece, it is true that the disc does not exploring virgin land under the previous 4. The charge of "commercialism" by some fans so has more to their willingness to identify with an underground music and break away from the mass. So False trial: Metallica signs here indeed a perfection.