It can best be compared to Cluster's Curiosum which was released by Sky Records the previous year.
[1][2] Offene Türen was recorded at Roedelius' home studio and at Erpelstudio, Vienna, Austria.
[4] Two tracks, "Besucher Im Traum" and "Auf der Höhe", were included on the Sky Records compilation Auf leisen Sohlen - Das Beste Von H. J. Roedelius (1978 - 1982) which was first released on LP in 1984 and reissued on CD in 1994.
The review for the Babyblaue Prog website, written (in German) by Jochen Rindfrey, describes the album (in part): "...Offene Türen shows a more avant-garde side.
There are also songs like 'Allemande,' which sounds a bit like a burlesque folk dance, or 'Abenteuerliche Begegnung' and 'Besucher im Traum' which resemble in their romantic mood more typical Roedelius music.