Released in 1974, Einsjäger & Siebenjäger (Earth & Sky) is a further rock entrenchment for Popol Vuh.

Florian Fricke's piano is more percussively present with its runs and large chord voicings rippling throughout each composition.

In addition, Daniel Fichelscher's electric guitar picks up where Conny Veit's left off, taking the bluesy space rock solo style into new territory by incorporating Eastern scales into the main body of his blues phrasing.

There are five short compositions on the first side, which merely prepare the listener for the mind-blowing title cut, which takes up the entirety of side two.

Here, in addition to the swirling organic percussion and pianism of Fricke and the loping, often singing guitar lines that repeat hypnotically with rock & roll tension, the vocals of the amazing Djong Yun become the catalyst for the other musicians to spiral off into extended improvisations.

This is certainly one of the most beautiful albums Popol Vuh issued in the 1970s, and remains a watermark for their trademark of melding beauty and free-flowing composition.