 He has also worked in radio, concentrating on rock music.In 1991 he and his friends created a monthly magazine called "Tylko Rock" ("Just Rock"), which changed its name to "Teraz Rock" ("Now Rock") in 2003; Weiss has been editor-in-chief throughout this time.In 1991 Weiss completed his first "Rock Encyclopaedia", which was published by Iskry and sold more than 100,000 copies.