"Union of sleep is a doom/stoner metal band from Hagen, Germany, formed in early 2008. The lineup consists of Christian (Bass), Rocco (Guitar), Toni (Vocals), Raven (Drums) and Ash (Guitar)."
Just heavy, hard hitting doom metal/sludge with heavy as all fuck basslines that is sure to melt your face. Their self titled album is more stoner metal oriented but is also worthy of checking out. If you're a fan of Church Of Misery or Weedeater you're going to love Union Of Sleep. Check it.