Yatha Sidhra only recorded a single record, but A Meditation Mass is often spoken of in hushed tones as a secret gem in the canon of 1970s krautrock. Its ritualistic sound and Buddhist iconography (not to mention the eye-watering prices it fetches) have turned into something of a holy relic. It may not quite be that, but it is still a stupendous piece of German psychedelia. If you don’t know it, we invite you to get initiated.