There are at least 3 artists called Deep Sleep: 1) Deep Sleep are a hardcore/punk band from Baltimore,MD. 2) Deep Sleep are a Indie Electronica / Pop band from Portugal. 3) Deep Sleep are a Hard Rock band from the small town of Kokemäki, Finland. 4) There also are relaxation music on the same name Deep Sleep. The biographies for each are listed below: 1) Deep Sleep are a hardcore/punk band from Baltimore, MD. They pride themselves on playing some raw, spiteful, in your face hardcore punk rock.