For the rest, some interesting alternative versions, as the second additional version of I Do not Know (but still beautiful orchestrated version of Philips I had in 33t) and a very decent book with beautiful photos.
The format itself is rather interesting (similar to a vinyl box set), but as noted by another buyer, not very convenient to store discs.
I regret that the Flemish versions have not been stored on a separate CD, it was already a complaint that I was doing the previous integral, to me they have only anecdotal and rather irritating effect at the end of such outstanding albums These People There and Marieke. The same applies to alternative versions.
If you already have an integral of Brel, I'm not sure that it satisfies everyone, but it would be a shame not to acquire it if his work is less known you. Quality is perfect and the most comprehensive selection which is to date.