In her career she has focused on 20th- and 21st-century Icelandic music and premiered works by contemporary composers, including Jórunn Viðar, Atli Heimir Sveinsson, Haukur Tómasson, Karólína Eiríksdóttir, and Ragnhildur Gísladóttir, as well as worked with different music ensembles such as the English Brodsky Quartet.
[citation needed] Her latest CD, Langt fyrir utan ystu skóga (Far Beyond the Remotest Forests), with songs by Björk Guðmundsdóttir, Gunnar Reynir Sveinsson and Magnús Blöndal Jóhannsson was released in the summer of 2011.
Among the parts that Ásgerður has sung on stage are those of Carmen in Georges Bizet's opera of the same name at the Reykjavík City Theatre (2006), Magnus-Maria (2014) and Skuggaleikur (Play of Shadows, 2006) by Karólína Eiríksdóttir and Sjón, and Wide Slumber by Valgeir Sigurðsson (2014).
She has also acted and sung in the mono-opera The Medium (2009) by sir Peter Maxwell Davies and appeared as actress in the theatre productions Common Nonsense (2004) and Ball of Yarn (2009).
[3] Ásgerður's worked as Bill Skarsgård's vocal coach for his role as Count Orlok in the 2024 film Nosferatu.