Brian Eno's first collaboration with Cluster, the best of this album's instrumental pieces are too emotionally rich to waste as mere background music, evoking feelings of hesitancy and regret that rescue the music from mere vapid prettiness. Three tracks in particular indicate things to come. "Wehrmut" is an ethereal synth piece with the pace slowed to a tantalizing crawl. "Steinsame" features a treated guitar playing a slow figure over a dark, almost funereal synth melody. "Schöne Hände" uses watery synth effects to highlight a shivery rhythm pattern. Other pieces dispense with moody atmospherics altogether. Tracks like "Ho Renomo" and "Selange" consist mainly of pounding rhythm patterns lightly embellished by piano or synthesizer, and "Die Bunge" sounds like an electronic goldfinch fluttering around a cartoon horse. While not the unqualified success of their 1978 collaboration After the Heat, Cluster & Eno remains an important album. Along with Eno's 1978 Music for Films, these works helped define the depth and promise of ambient music.