The five finalists performed original songs ( written by music publishers and internally chosen by the Spanish broadcaster ) with the goal of representing Spain at the Eurovision Song Contest 2018 . Each finalist was allocated a song to be performed solo , three songs were allocated to duet combinations which included the sixth-placed contestant Agoney , and " Camina " was a candidate song performed by the five finalists . The Spanish entry for Eurovision was decided by public vote . After a first round of voting , the three entries with the most votes from the public advanced to a second round of voting . In the second round , the Spanish entry was selected by public vote
Eurovision Song Contest 2018
Eurovision Song Contest 2018
Operación Triunfo (series 9)