In 1973, ABBA entered the Swedish "melodifestivalen", which is their Song For Europe, with the song "Ring Ring". They came third, and would have to wait another year for Euro-glory. Here is the song which won that 1973 competition, "You're Summer" by Nova. It contains the legendary line "Oh your breasts are like swallows nesting". Let's face it, that's why I'm posting it here.
(Ireland gave it five points in the '73 Eurovision Contest proper, by the way...)