The third graders were singing a German song about the seasons of the year - Ich lieb den Frühling. 3a class was singing about spring, 3a about summer, the student Anton Galić from the 3c was singing about autumn and other students were singing about winter.

You can see the video by clicking on the link below:

https://www.youtube.com/watch?v=3wi0zm8t1Fs&t=21s