Essential: a masterpiece of Progressive rock music
Not typical Krautrock but they definitely have something flavoured like desert or dry fruits, as we can hear via Krautrock.
Very theatrical, dramatic, and enthusiastic "Mass". We cannot always feel such a passion via Krautrock basically (understood that they belong to Eclectic subgenre rather than Krautrock). On the other hand, they launch psychedelic organ-based fuzzy muddy colours in front of them, that can be felt in lots of 60s- or 70s-oldie-goodie psychedelic pop / rock / progressive rock with symphonic spice. Credo suite leans toward this colourful atmosphere, strongly.