Olaf Seider is a German musician/sound designer and art director.
He`s involved in the experimental electronic music scene since 1986.
He also used those aliases Azreal, Olaf Seider Coincidence as names for other projects. He still active nowadays,you can check his webpage here.(It is in German only).
This tape offer us a good mix of raw noise and deep conversations(again only in German) bringing us in a dark dimension of horror and mysticism.
Of course I am talking about my sensations only,in fact I cannot understand German and so I am very probably missing the most of the meanings of this tape-work.
Definitely a very good tape for people into dark and creepy sounds/messages.
New Band Underground is his personal label founded in 1992,I guess it is not active any longer.