Complex sentence: Five artists, who were invited to compete by TVE, will take part in the national final that will be broadcast live in 22 February from the Sant Cugat del Vallès studios in Barcelona.
Split into simpler sentences: Five artists, who were invited to compete by TVE, will take part in the national final that will be broadcast live in 22 February. The national will take place at the Sant Cugat del Vallès studios in Barcelona.