The Belgian participating broadcaster, Flemish Belgische Radio- en Televisieomroep (BRT), selected its entry through a national final.

This was the first edition of Eurosong, which would become the name of every BRT and VRT national final after 1975 (With the exception of 1996), and would become synonymous with the Eurovision Song Contest itself in Belgium.

The first stage of the selection process consisted of seven semi-finals at the Amerikaans Theater in Brussels, taking part between 17 November 1974 and 16 February 1975, hosted by Staf Van Berendoncks.

Rita Deneve would have participated with the song "Maar toch blijf je de eerste" but was absent due to the birth of her son.

The final, consisting of ten songs, took place on 1 March 1975 also at the Amerikaans Theater, hosted by Staf Van Berendoncks.

Voting was by five regional juries, each consisting of 20 members of the public, and "Gelukkig zijn" emerged the winner by a margin of almost 60 points.