Dubbed by wags "the singing secondary schoolteacher" as a result of his often didactic lyrics, German rocker Heinz Rudolf Kunze enjoyed his greatest success in the mid-'80s via the smashes "Dein Ist Mein Ganzes Herz" and "Mit Leib und Seele." Born November 30, 1956, in Espelkamp-Mittwald, Kunze was ...