In 2011, she launched her music career by releasing the single "Drown in Me". Since 2019, she is releasing her music as Lvma Black. Her 2019 single "I C U" charted in Poland at number 61.
Mielcarz holds a master's degree in Journalism and Political Science from the University of Warsaw, and is also a graduate of the Maggie Flanigan Drama Studio in New York. She currently lives in Los Angeles, with her husband and their two daughters.