in 1975 jeff was produced by his parents in warsaw poland, but moved to sweden in 1981 and lives since then in malmoe sweden. jeff who was formerly called mike pung has been involved in electronic music since 1992 but it all began as a bedroom thing that has since then evolved into a habit. he started creating music in 1993 and got hooked on it directly, but it took until 1998 before his first single was to come out on his own label maskros music. since that single he has released 19 singles and has released on labels like poker flat, episode, treibstoff, audio beyond, konvex konkav etc. in 1994 he and a partner opened a record store called cosmic one records that became the first electronic record store in malmoe. with the opening of the record store the dj career got a boost and he started playing on various venues. a year after the store was opened jeff & his record store partner jim groovy started making their own one-off parties and clubs in various sizes. his latest residency was in a house club called thank god it's friday were he played almost every friday for over a year. in 1996 jeff & jim started their first label azurite records. jeff started his own label maskros music in 1998. and the year 2000 two new labels called phunctional & kung fu dub were started by jeff. his musical influences came from detroit. people like derrick may, juan atkins & kevin saunderson, but also from richie hawtin's label plus 8 and the artist there like speedy j, kenny larkin etc. europe also had a big impact on him with artists like stefan roberts, 808 state, klf, dreadzone, terry lee brown junior, tikiman & labels like plastic city, svek, circulation, early network releases + many more. also a lot of reggae & dub artist like augustus pablo, lee perry, mad professor, andy horace, king tubby + many more.