Oxen is one of the creations of Grzech Piotrowski – a Polish jazz saxophonist. A more renowned idea of Piotrowski is Alchemik, a group already well-established on the Polish jazz scene. Still, between Alchemik and Oxen much similarity cannot be found. In Oxen Piotrowski plays with his friends musicians – Marcin Masecki (piano), Darek Krupa (guitar), Piotr Zaczek (bass), Michal Dabrowka and Grzegorz Grzyb (drums).