Was listening to ASOT #536 at the time and Lumi - Dreas vs Alex Robert happened to be the track playing at the time, and being so creative and unable to think of anything else that was the first thing i saw and decided on it. Names Sebastian, Seb's easier, thinking to be known under Jakub my middle name just sounds better, Seb gets people confused too much, been called sam, seth, sab, sob and countless other weird names that people think they've heard. My first and last name don't ring all too well together. So reckon Jakub spelt the proper way the polish way the way to go