Köhler co-owned Karo Music Studios and produced music for artists including Kalle Trapp, Blind Guardian, Molly Hatchet, New Commix, Kentucky, Toll House, Ser, Ian Cussick band, BLUE BLIZZ, Wave (with Wiedeke) and Gnadenlos Platt.
Rolf Harris | Rolf Hochhuth | Rolf Singer | Kohler | Rolf Köhler | Rolf Martinsson | John Michael Kohler Arts Center | Horst Köhler | Wolfgang Köhler | Walter J. Kohler, Jr. | Köhler | Rolf Stommelen | Rolf Liebermann | Rolf Hachmann | Rolf-Dieter Heuer | Kohler, Wisconsin | Kohler Company | Walter J. Kohler, Sr. | Rolf Wolfshohl | Rolf van der Vlugt | Rolf Stranger | Rolf Steiner | Rolf Landauer | Rolf Gehring | Rolf Ellmer | Rolf Dieter Brinkmann | Rolf | Richie Kohler | Fred Kohler | Terry Kohler |
# "Magic Mystery" (Extended Dance Remix) (featuring Lothar Atwell) (Köhler/Scholz/Wiedeke/Widrat/Atwell) - 5:16
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# "Magic Mystery" (Single Version) (Köhler/Scholz/Wiedeke/Widrat) - 3:53
They invited to the original choir of these projects, Rolf Köhler, Michael Scholz and Detlef Wiedeke, for the falsettos, and they recorded some of the most famous Modern Talking and Blue System songs, like Brother Louie, You're My Heart, You're My Soul, Cheri, Cheri Lady, My Bed is Too Big, Ready for the Victory, and others.