Rosenberg’s musical career was consolidated throughout the 1970s with hits such as “Fremder Mann” (“Stranger”), “Er gehört zu mir” (“He belongs to me”), “Ich bin wie du” (“I am like you”) which was later sampled by Blue Adonis on their track “Disco Cop”, “Marleen”, and “Lieder der Nacht” (“Songs of the Night”), often making appearances on TV and radio.

She is considered one of the most successful performers of German Schlager of the last four decades. She was one of the first German singers to introduce disco in the German music market with “Ich bin wie du”. Her career underwent another revival in 1989 with the hit song “I Need Your Love Tonight” from the soundtrack Rivalen der Rennbahn (“Racetrack Rivals”), written by Dieter Bohlen.