Just before she completed her studies in Gesangsstudio, Ann was cast as Cha Cha in "Grease" (Vienna production), and she performed on the original cast album for the show. After her successful run in "Grease", other roles would follow, including Babette in "Beauty and the Beast", Anita in "West Side Story", Roxie in "Chicago", and Queenie in "The Wild Party". She performed in several cities and countries throughout Europe, including Vienna (Austria), Amstetten (Austria), Stuttgart (Germany), Berlin (Germany), and Bern (Switzerland). Though she traveled often in order to perform, Ann's primary city of residence remained Vienna, where she maintains an apartment to this day.