Herzog had been friends with Florian Fricke for some time, and had already snagged some top-drawer Popol Vuh tracks for Aguirre - Wrath Of God and Heart Of Glass, to great effect. It's worth making clear, though, that Brüder des Schattens - Söhne des Lichts (Brother of shadow, son of light) isn't a straightforward soundtrack album to Nosferatu - in one of (several!) confusing quirks in the Popol Vuh catalogue, there's also a separate Nosferatu album with a different tracklist. So, anyway...
After the unearthly choral opening to the Brüder title track, the rest of its 17 minutes settle into a stately piano and guitar drone that builds and builds, sometimes with a bit more sitar and tambura here and there, to hypnotic effect. After the 'Schattens' of the Nosferatu intro, this blissful epic of minimal understatement just bathes you in kaleidoscopic 'Lichts'.
Over on Side 2, Höre, der du wagst (Hear, who dares) gives us a subdued epilogue to the main piece, and the album is then rounded out with two slightly more regular Vuh vehicles between Fricke and Fichelscher. But that's not to undersell them - even your common or garden Popol Vuh album track still exists in its own beautiful universe miles above anything else in the krautrock canon.
Brüder des Schattens - Söhne des Lichts
previously posted at SGTG:
Die Erde und ich sind Eins