The mural commemorating Michał "Joka" Marten – the legendary rapper and co-founder of Kaliber 44 – is located in the very heart of Załęże, one of the most distinctive districts of Katowice. The raw, post-industrial landscape perfectly matches the atmosphere of the music that Joka created, which has forever etched itself into the history of Polish hip-hop.

The work by Wojciech Walczyk and G2E / TEWU is not only a realistic portrait of the artist but also a tribute to his work and influence on subsequent generations of listeners. The artists, known for their deep roots in street culture, combined classic graffiti techniques with an emotional message, creating a mural that attracts not only rap fans but also everyone who appreciates art with a true message.