I do not think that I ever heard of Aabzu, but since I also never heard of the labels that released the first two albums, this may be very well possible. In 2010 Aabzu released a cd called “Rambo” and Zoharum presents recordings of a live performance in the same year. The music can be described as ambient IDM, often soft and soothing, at other times a bit more rhythmical and technoish. The overall atmosphere is ambient though, but I think that people who like those tranquil sounds of dub/IDM might enjoy this album as well. For me there might have been a bit more variety, but I guess this album goes well as background music.
Links: Aabzu, Zoharum