Bartosz Waglewski (Fisz) born March 19, 1978 in Warszawa, Poland is an award winning Polish rap artist. He is the son of musician Wojciech Waglewski and older brother of Emade (Piotr Waglewski). He studied at Europejska Akademia Sztuk (EAS).

The musical style of Fisz is unconventional. At the very beginning of his career he started out as a Hip-hop artist, but went experimental soon after releasing Tworzywo Sztuczne - Wielki Ciężki Słoń in 2004. Fisz and his producer Emade seek inspiration in black music giving soul, funk and jazz touch to their projects. His lyrics are often based on wordplay.