Year: 1990
Blue System - Best Album (Album)
Blue System - Obsesion (Album)
Blue System - Obsession - 4. Album (Album)
Blue System - Obsession (Album)
Angels Cry (European Dance 91) (Compilation)
Blue System - 6 Years - 6 Nights (MegaDance) (Compilation)
Blue System - 6 Years - 6 Nights Megamix (Compilation)
Blue System - Blue System 4 «Forever Blue» Plus «Obsession» (Compilation)
Blue System - Blue System (Compilation)
Blue System - Déjà Vu / Obsession (Compilation)
Blue System - Gold Collections (Compilation)
Blue System - Obsession / X-Ten (Compilation)
Blue System - Obsession (Compilation)
Blue System - Seeds of Heaven / Obsession (Compilation)
Blue System - The Best of Vol. 1 (Compilation)
Blue System - Twilight / Obsession (Compilation)