Sandra Stumptner, known professionally as Antonia Aus Tirol and later Antonja, was born on March 10, 1980, in Linz, Austria. She began her music career at the age of 14, performing with her father. Her breakthrough came when she covered "Anton aus Tirol" with DJ Ötzi, leading to a successful solo career under the name Antonia feat. Sandra S. Her first singles, "Ich bin viel schöner" and "Knallrotes Gummiboot", achieved chart success. Antonia Aus Tirol released her debut album Dirndl Power in 2001, followed by Best of in 2003. She collaborated with various artists, including Heino on "Blau blüht der Enzian – blau, blau, blau" and Kimberly on "Hände hoch". Her album Zeitträume, released in September 2009, included the single "1000 Träume weit (Tornerò)". She also participated in television shows like Big Brother in 2005. After changing her stage name to Antonja in 2021, she shifted her musical direction towards rock music, releasing the single "What a Night" in 2022. Throughout her career, Antonia Aus Tirol was nominated for five Amadeus Austrian Music Awards.
