allowed on stage was eight, and voices were allowed on backing tracks. A live orchestra was used every year from the event's debut to 2000, except 1985 and 1986. Two orchestras were used between 1960 and 1963, a large orchestra and , a jazz quartet. Since 2001, participants have performed to backing tracks. Entries cannot be publicly broadcast until the heats are previewed on radio. Entries eliminated in the heats may be broadcast as soon as the heat has finished. An embargo is placed on songs that qualify for the later rounds until the previews for the Second Chance are broadcast. After this, restrictions on the broadcast of contestant songs are lifted. Broadcasters sometimes make sweeping changes to winning songs before they go to Eurovision. For example, at Melodifestivalen 1961, Siw Malmkvist won with "April, April". Performing after her victory, she stumbled on the lyrics of the song and laughed out loud. The press criticised this as childish. SR replaced her with Lill-Babs for the Eurovision Song Contest. The 1987 winner "Fyra bugg och en Coca Cola", performed by Lotta Engberg, is another example; the song's title was changed to "Boogaloo" for Eurovision, as use of a brand name was against the Contest's rules. This name was chosen as Sweden's two previous Eurovision winners had also included the suffix "-loo". Until 1999, competing songs were only permitted in Swedish, apart from 1965, 1973, 1974, 1975. This did not stop most winning entries recording English (and other-language) versions of their songs. Since the abolition of Eurovision's language restrictions in 1999, regardless of the performance language at Melodifestivalen, every Swedish entry has been in English. Spanish, French, Greek, Italian, Portuguese, Bosnian and Persian are among the other languages to have featured. Cameron Cartio's entry in Melodifestivalen 2005 was performed in a constructed language. Media coverage Melodifestivalen is broadcast on television, radio and the Internet. It is broadcast on SVT1 with international coverage on SVT World and later SVT Play. Until 1987, the competition was broadcast on Sveriges Radio TV, later known as TV1. Between 1988 and 2000, the event was broadcast on different channels depending on where it was held. Finals in Stockholm were broadcast on Kanal 1 (formerly TV1) while finals in Gothenburg or Malmö were broadcast on TV2. Sveriges Radio has broadcast the event on P1, P3 and P4, where is currently broadcast. Although the final is traditionally held on