Manja Slak studies at the University of Music and Performing Arts in Vienna. At the age of seven she performed her first solo concert and in the following years participated in many national and international music competitions. In 2007 she attended the 13th international competition "Young Virtuosos" in Zagreb, where she was awarded first prize.
In 2010 Manja attended the 14th international competition in Udine, Italy and received first prize across all instruments. In 2014, she attended an international competition called Culturale Musicale Euritmia and won first prize for brilliant and expressive performance for a composition. She has been a member of the piano trio Sensibile since it was founded, which has received a large number of first prizes and awards both nationally and internationally.