A multi-talented music producer. He graduated from the University of Wolverhampton (U.K.) with a degree in Sound Engineering. Rafał, a.k.a. OER, is the initiator, co-founder, and music producer of the Bydgoszcz-based band B.O.K and HRYPA. Winner of the Golden Record for his participation in the production of the album Bisz "Wilk Chodnikowy."
Rafał runs the 21 Music Studio at the Academic Cultural Space in Bydgoszcz, where he provides recording, mixing, and mastering services.
Music is his life's passion and the best way to express himself.
He has worked for clients such as AXE, Red Bull, Lech, Capitan Jack, Hardmade, Biedronka, and Mercedes-Benz.
As a beat-maker and producer, he has worked with the top of the Polish hip-hop scene. He has collaborations with, among others: Grubson, Łona, Bisz, Ero J.W.P., O.S.T.R., Tetris, Eldo, Pelson, Pyskaty, Hades, W.E.N.A., 2cztery7 and Kękę. He has also collaborated with international artists such as Afu-Ra (U.S.), Promoe (Looptroop Rockers) Reks (U.S.), Fya Bryte, Lion D, and many others. O.E.R. music accolades include 1st place in "Perfect beat Challenge" 2016, 2017, and 2018, 1st place in the "Beat Battle" competition at the S.C.A.B.B. Festival (Poland), and 1st place in the competition for an official remix of the song "Wychowani w Polsce" by O.S.T.R.