squarish sans serif

Squared sans serif

This squared sans serif has me stumped!
Its from the booklets packaged with Deutsche Grammophon's DVD presentation of Robert Lepage's Wagner Ring at the Metropolitan Opera in 2011-12.
Among the blind alleys I followed were: fonts with a sans+squarish tag at MyFonts, http://typophile.com/search/node/squared%20sans, and a fascinating discussion of The Mystery of Steile Futura http://typophile.com/node/18227.
So what am I missing?