The show was the very first entertainment programme to be broadcast in high definition by RTP. Nucha represented Portugal in Zagreb in 1990 with the song Há Sempre Alguém while Evelyne Filipe was a backing singer for Vânia Fernandes in Belgrade in 2008. None of them was lucky enough to reach the final. Vanessa, who has taken part in the national selection twice before, was luckier; she was the replacement act after one of the original 24 selected songs was disqualified and now her Alvorada is one of the 12 finalist songs.
The order in which the songs will be performed in the final will alternate one song from each semi-final. Tonight's songs get the uneven slots and Thursday's qualifiers will get the even places:
The second semi-final takes place in only two days time, next Thursday the 4th with the final being on Saturday the 6th of March.
Flor-de-lis were last year's Portuguese entry and got to the Final of the Eurovision Song Contest with Todas As Ruas Do Amor which came 15th. In 1996 Portugal achieved its best result ever, a 6th place, with O Meu Coração Não Tem Cor by Lúcia Moniz.