Allegra Tinnefeld was born in Vienna on 10th of September 2005. Daughter of Joachim Tinnefeld, a member of the Vienna Symphony Orchestra, she has been taking violin lessons from the age of four and won several awards at the national competition Prima la musica between 2011 and 2015. She had solo performances at "Klassik an der Donau" (2016) and at several concerts hosted by the Internationale Chopin-Gesellschaft as well as at festivals in Vienna, Linz und Graz.

She made her much-praised debut as an actor in the TV production "Seit Du da bist" (AT 2016), playing the main character, an extremely talented young violinist and daughter of a single mother (Katharina Schüttler). She went on to star in smaller roles in Nikolaus Leytner‘s drama about a shooting rampage, "Die Stille danach" ("The Silent That Follows", DE/AT 2016), in Robert Dornhelm’s family saga "Das Sacher" (AT/DE 2016) and in an episode of the TV crime series "SOKO Donau" (2017). In 2018 she had her first major role in a feature film, "Fünf Freunde und das Tal der Dinosaurier", playing clever George.