Liber , real name Марчин Пиотровский , is a Polish artist working in the pop, alternative, and rap/hip-hop genres. His work is known for its combination of melodic motifs and socially conscious lyrics. Liber has collaborated with various artists of the Polish scene, including Sylwia Grzeszczak , with whom he released several popular tracks. Among his well-known songs are "Czarne chmury" and "Co z nami będzie" Liber has made a significant contribution to the development of Polish pop music, fusing elements of hip-hop and alternative sounds.

• Genres: Поп, Альтернатива, Рэп и хип-хоп
• Language: Polish