It was recorded live in the studio in Vienna, Austria in July 1994 and released on January 24, 1995, on the U.S.-based Gyroscope label.

The music is continuous, and One Hour is presented as a single piece, the longest Cluster has recorded to date.

One Hour is structured much like the title track of Großes Wasser, with short, soft melodic sections at the beginning and the end sandwiching a much longer.

At times the experimental music flows like some bizarre soundtrack for a David Lynch-influenced student film.

Although the duo's wildly eclectic, esoteric sound may take some getting used to, One Hour is one of those sneaky discs that continues to grow on you with each listen.