Due to the country's very small size, all Monaco's entrants came from outside the principality, although French-born Minouche Barelli, who represented the principality in 1967, shared her time between Paris and Monaco, acquired Monegasque citizenship in 2002, and died in the principality on 20 February 2004 at the age of 56. The large majority of the participant were French, with also one Yugoslavian, Tereza Kesovija, and one Luxembourgian, Mary Christy (born Marie Ruggeri). Several singers selected to represent Monaco are key figures of the French scene, such as Françoise Hardy and Michèle Torr. Luxembourg, another small country, also sent a great number of French artists to the contest. At the 1967 contest, the Monegasque entry, "Boum Badaboum", sung by Minouche Barelli, was written by Serge Gainsbourg. He had already composed the winning entry in 1965, "Poupée de cire, poupée de son", sung by France Gall for Luxembourg. Jean Jacques, who represented Monaco in 1969, was the first child to take part in Eurovision. He was 12.