This was the third weekend in August and therefore time to celebrate the Days of Hearts Festival (in Dutch: Hartjesdagen). This festival is celebrated in Amsterdam only and furthermore only in one street, the "Zeedijk" (Sea Dike). It has a very long tradition of circa 800 years (see link). The picture shows one end of the street were the festval starts with the singing of opera songs from an open window.
en.wikipedia.org


Hartjesdag - Wikipedia
