This was Stella's third appearance at Eurovision: She had appeared twice as part of the group Hearts of Soul/Dream Express for the Netherlands in 1970 and for Belgium in 1977. As a solo singer, she had also taken part in the Belgian preselection in 1981.
Three heats were held with six songs in each, from which the top two songs selected by televoting went forward to a semi-final. The top four songs from the semi-final went forward to the final. Details of the non-qualifying songs from the first heat are not currently available.
The national final was held on 21 February with the winning song chosen by a 12-member "expert" jury. After Stella was declared the winner, it was reported that some RTBF executives were unhappy about the fact that they were to be represented by a Dutch-born singer who spoke very little French.
On the night of the final Stella performed 11th in the running order, following Austria and preceding Spain. At the close of the voting "Si tu aimes ma musique" had received 96 points, placing Belgium 4th of the 18 entries. Although the song did not receive any 12 points votes (the highest were 10 from Denmark and Spain), it achieved the distinction of being only the eighth song in Eurovision history to that date (and only the third non-winner) to receive points from every other participating country (excluding the 1971-1973 contests where each country had to award a minimum of 2 points to every song). The Belgian jury awarded its 12 points to Switzerland.