Free rock ...

Itch debut ...
Schnitzler, Froese and Schulze, just before he got back.
From the legend a few years later is really nothing to hear.
Rather free improvisation as Pink Floyd have been made in the long title track of A Saucerful Of Secrets 1968.
A bit of free rock, like there was at the time in the debut of the Guru.
Add to that a few effects such as burning paper or glass.

The bottom line is typical of this time of Berlin?

No, more new sounds. Not for normal listeners, but for people who are something (well, at that time, 1970, anyway) want to hear something really new.

I think it's good.