Here are the singers/composers many familliar faces even old ones, I mean really old names
Semi final 1
Rita Seidi (composer Sara Tavares) - Lisboa, Lisboa (Lisbon, Lisbon)
The Voice contestant, as for the composer she represented us in ESC 1994
Leonor Andrade (composer Miguel Gameiro) - Há Um Mar Que Nos Separa (There Is A Sea Between Us)
The Voice contestant, composer wrote for many singers such as Mariza, Simone de Oliveira etc.
Filipa Batista (composer Augusto Madureira) - A Noite Inteira (All Night Long)
The voice contestant, as for the composer he wrote the 2010 song for Filipa Azevedo
Yola Dinis (composer Nuno Feist) - Outra Vez Primavera (Once Again Spring)
She is a fado singer, he composer several fdc songs over the years
Goncalo Tavares (composer Goncalo Tavares) - Tu Tens Uma Magia (You Have Magic)
No idea who he is.
Adelaide Ferreira (composer Adelaide Ferreira) - Paz (Peace)
She represented us in 1985
Semi final 2
Rubi Machado (composer Sebastiao Antunes) - Quando A Lua Volta A Passar (When The Moon Goes By)
She is a luso-indian singer no idea who she is to be honest.
José Freitas (composer Diogo Churky) - Mal Menor (Less Bad)
x-facor contestant
Teresa Radamanto (composer Fernando Abrantes) - Um Fado Em Viena (A Fado in Vienna)
Took part in FDC 98 and 07 both times came second
Simone de Oliveira (composer Renato Júnior) - Á Espera Das Cancoes (Waiting For The Songs)
Well I don't think she needs any introduction, represented us in ESC 1965 and 1969 and even with 77yo she doesn't seem to want to stop. Composer wrote some songs for fdc in the past as well for Simone.
Filipe Goncalves (composer Héber Marques) - Danca Joana (Dance Joana)
Took part on a show in here called Operacao Triunfo, the composer wrote some of Rita Guerra songs.
Diana Piedade (composer Carlos Massa) - Maldito Tempo (Damn Time)
She was the runner up of the 1st Idols series