Grengus is the fourth album from Horn of the Rhino, a doom/sludge/thrash metal band from Spain. I've been hooked since their debut, Breed the Chosen One, when they were known simply as "Rhino." Each album that has followed, Dead Throne Monarch (again as "Rhino") and then Weight of Coronation (their first as "Horn . . ."), has been excellent. I reach for all of them consistently. But fuck if Grengus is not a leap forward for this group. No radical change in sound, style, or concept, but rather a refinement. One that should get this band some long overdue and well-deserved attention.
I bought the cd directly from Doomentia, out of the Czech Republic. Not sure who else distributes it, but I've purchased from Doomentia before without any issues.
If you are not familiar with Horn of the Rhino, you should check them out. Grengus is a fine place to start.