Seid Memić, known by his stage name Vajta, (born 8 March 1950) is a Bosnian singer and the vocalist for the Yugoslav rock band Teška industrija.From 1975 to 1976 Vajta was a vocalist for Teška industrija, who enjoyed great commercial success throughout the Balkan countries but later dissolved.He became popular in the 1981 Eurovision Song Contest during which he represented Yugoslavia.