Où sont-elles passées was the Monegasque entry in the Eurovision Song Contest 1964 in Copenhagen, performed by Romuald. The song is in the chanson style popular in the early years of the Contest. Romuald laments the departure of the girls of his youth, explaining that as he grows older he loses the enjoyment and mystery of his early romances. It was performed tenth on the night, following Germany and preceding Portugal. At the close of voting, it had received 15 points, placing 3rd.