Her vocal expression has excellent breadth, from older folk song techniques such as kulning to baroque, jazz, and modern art music.

In Sweden, she has collaborated with the composer Karin Rehnqvist and premiered several works written directly for Rosenberg such as "Puksånger - Lockrop" (1989), "Hetluft" (1993) "Rädda mig ur dyn" (1997), "Så går en dag" (2000), and with directors such as Peter Oskarsson (Den Stora Vreden, 1988–1990) and Leif Stinnerbom  ("Ljuset" 1996).

[citation needed] Among her artistic projects are "Syn för sägen" (1995)  "ReBoot-OmStart"  (2010),  "Kurbits-Koral - The Spirit of the moment"  (2010),  "Getens horn"  (2011),  "Voice Space"  (2013)  "Folk Vocal"  (2014) and others.

As head of the Department of Folk Music at KMH, Rosenberg developed many pedagogical concepts, courses, and programs.

She started the folk music groups Rosenbergs Sjua, Krus och  Rotvälta and has toured Europe, the US, and Asia.