Johanna Abenius was educated at Stockholm Musikalartist Utbildning. Since graduating in 2015, she has worked as a freelance musical artist and participated in productions such as the Oscar Revue at the Oscar Theater and Lorensberg Theater, Little Shop of Horrors at Göteborgs Stadsteater, Grease arena tour, The Merry Widow at Nöjesteatern in Malmö, Rolandz's pub show at Rondo in Gothenburg, and as a choreography assistant for Sister Act at Chinateatern in Stockholm. She has also participated in the Melodifestivalen together with Robert Gustafsson, as well as competing in the Polish Melodifestivalen.
At Gothenburg Opera, she has previously appeared in Wicked and Cabaret.