"Ajax-mars" (English: Ajax march) is the official club song of Dutch association football club AFC Ajax since 1918. The song was first heard on the 31 March 1918 when Ajax clinched their first ever division championship in a 4-1 win over Sparta Rotterdam. Sparta had won consecutive championships the previous three seasons with Bok de Korver, but when Ajax starlets Jan de Natris and Wim Gupffert scored three goals in three minutes, the crowd at Het Houten Stadion were jumping and chanting what would become the blueprint for this song. The words to the song were then written by Dirk Knegt, and it was composed by Emile Painparé. It was performed at the stadium by an orchestra during the championship celebration.