Su canción was the Spanish entry at the Eurovision Song Contest 1979 in Jerusalem performed by Betty Missiego. The live performance featured four children who joined her on stage singing "la la la's" and at the end unfurling banners saying "Thank you" in English, French, Spanish and Hebrew. It was performed last on the night following Austria. At the close of voting, it finished in second place with 116 points - and it was their own jury that caused their defeat. Had they not given their 10 points to Israel (who ended up winning), Spain would have won by 1 point.