 She goes on to explain that it is the unique nature of the Dutch climate and the faithfulness of Dutch girls that cause the birds of the country to sing; they really sing, in contrast with the French, Japanese, and Chinese birds, all of which sing "tudeludelu" (a sound roughly approximating birdsong).According to Des Mangan this song set the tone for the Eurovision tradition of nonsensical lyrics, although he admits that there are other contenders for such a claim as well.The song was performed first on the night, preceding Switzerland's Lys Assia with "Das alte Karussell".