Bartlomiej Brat Oles (born 1973 in Sosnowiec, Poland) is a jazz and free improvisation drummer, composer and record producer. He is the twin brother of Marcin Oles and Art-director of the Polish independent Jazz Label Fenommedia.Bartlomiej Brat Oles studied classic percussion at Music High School Łódź. From 1988 he play on drum set. In his career he played with, Kenny Werner, Theo Jörgensmann, David Murray, Erik Friedlander, Chris Speed, Christopher Dell, Herb Robertson, Ken Vandermark, Frank Gratkowski, Simon Nabatov, Jean-Luc Cappozzo, Emmanuelle Somer, Andrzej Przybielski, Mircea Tiberian, Rudi Mahall, Marcin Oles, Mark Taylor, Anthony Coleman, Adam Pieronczyk, Stanley Jordan. Since 2003 he has been a member of the Trio Oles Jörgensmann Oles. The Trio recorded four albums Miniatures, Directions this album was voted by the Polish Internet jazz magazine Diapazon as the "Best Recording of the Year 2005", live in Poznan 2006 and Alchemia. His album recorded like leader with great American pianist Kenny Werner was voted as the "Best Recording of the Year 2006" by Polish Radio. In 2007 he start with brother unique project OlesDUO double bass & drums. He also composes music for theatre and movie.