The earliest period in Eurovision history is marked by the style of songs which participated and the manner in which the show itself was presented. Famous musical and film stars would participate without prejudice, with Italian winners of the Sanremo Festival and such British names as Patricia Bredin and Bryan Johnson. With a live orchestra the norm in the early years and simple sing-a-long songs on every radio station, the Contest grew into a favourite amongst almost all age groupsacross the continent. Iconic songs such as "Volare" and France Gall's "Poupée de cire, poupée de son" hit the sales charts in many countries after their Eurovision performance. In the beginning, it was obvious for the participants that they should sing in their country's national language. However, as the Swedish entry in 1965, "Absent Friend" was sung in English, the EBU set very strict rules on the language in which the songs could be performed. National languages had to be used in all lyrics, including Maltese when the island nation made its debut. Songwriters across Europe soon tagged onto the notion that success would only come if the judges could understand the content, resulting in such entries as "Boom-Bang-A-Bang" and "La La La". The lyrics were allowed to contain occasional phrases in other languages, which was utilized for example by the Yugoslavian song in 1969. In 1973, the rules on language use was relaxed, in the following year ABBA would win with "Waterloo". Those "freedom of language" rules would be soon reversed in 1977, to return with apparent permanent status in the 1999 contest, with the intervening years waning from highlights to dead-weight years. The "swinging sixties" and punk scenes were all but missed by the contemporary Eurovision periods, whilst the 1980s saw an increase in balladry with an almost blanket disregard for electronica or guitar-based pop. Other than heavily infused pop versions, rap has been next to completely ignored. One result of the attempt to modernise the songs in the Contest was the abolition of the obligatory use of the live orchestra, to which all songs had to perform. This decision was made in 1997 and removed the automatic requirement for songs to be re-composed for playback with a live orchestra. As of 1999, the host country has not been obliged to provide a live orchestra and there has not been one since. No attempt has been made to return the Contest to the days of symphonic arrangements and violins. Live music is not allowed. This rule most likely exists because there is not enough time to wire the instruments during the short break between the songs. On the other hand, a backing tape may have no voices on it, singing must still be done live. Before 1997 backing tracks were allowed, but only if all instruments on tape were featured on stage. This explains the odd situation in 1996, when Gina G, entrant for the United Kingdom, had two computer screens on stage. Other than the earliest contests, each and every entry has been fixed at a maximum three minutes in length.