"Despite its obscurity, this 1967 album (first issued [on CD] in the U.S. in 2001) is likely to interest free jazz/improvisation enthusiasts, not just for the quality of the music, but also for its relationship to the work of other, better-known avant-garde jazz outfits. The clattering, conversational opener "F. Eks" might be mistaken for the work of Alexander Von Schlippenbach's trio with Paul Lovens and Evan Parker, while "Xenia," with its floating, atonal saxophone melody, calls to mind some of Anthony Braxton's quartet work. Cecil Taylor's early-'60s trio with Sunny Murray and Jimmy Lyons is another basic reference point on a few of the tracks, even though Prehn avoids mimicking Taylor's more dense playing style ... The fact that it stands up as well as it does when compared to the work of so many other landmark groups should be enough to recommend it to dedicated fans of the genre".