There are (were) at least three bands called Petrol. 1) new band of Dan Solo, bassist and ex member of the Italian group Marlene Kuntz. 2) Petrol are a psychedelic rock trio from Belgrade, Serbia, formed in 2003 by Ana Janković, Ilija Duni and Milan Bukeljović. The band started out as an improvisational unit without fixed instrumental roles. Experimental jams took place at Ilija’s flat and recordings were made over several months before the band started playing live.