DEEP SLEEP Sugisawa, I keep coming back to that. A few times I saw able to match a weird alias to a name on
http://vgmdb.net/artist/161 this kind of list well enough for my own personal satisfaction, but this one thwarts even a forgivable guess. Probably not
http://vgmdb.net/artist/11718 Eagle Sawao, a recording engineer, and, I would guess, also an alias.
This does remind me that I should go to bed. Or "mattress," at this point in my life.