As a child, Marina took part in numerous singing contests and television music competitions, winning on many occasions. She began her professional career in 2000, appearing in Waldemar Krzysteks television play "Ballada o zabójcach". She competed in Poland's national final for the inaugural Junior Eurovision Song Contest 2003 with the song "Sen". In 2004, Marina played the lead role of Juliet in Studio Buffo Theatres adaptation of "Romeo and Juliet" directed by Janusz Józefowicz. In 2007, she took part in New Wave competition and came third. She was awarded $20 000 and was offered a record deal with Universal Music Germany, which she rejected as she did not like its terms. She also received a special prize of $50 000 from one of the competition's organisers Alla Pugacheva.