Sprobuj was written by Tomasz Stachowicz, Mariusz Mitura, Dominik Gryn, Adam Kowalski, Zenon Michal Kowalski, Pawel Nowicki, Krzysztof Marcin Pankowski, Szymon Kubiak. US mechanical royalties are collected by Muserk Zaiks (100%).
US mechanical shares as registered at The MLC · each writer’s chain: writer → publisher → administrator.
