Pedal on bicycles and see how pedaling causes the sprinklers on the columns to turn around and play sounds. The pedaling process creates kinetic energy that is converted to electrical energy by which the rotation of the sprinkler is created. At the top of each sprinkler page is a musical instrument that symbolizes the sound produced, and a solar panel is installed on the side column. Solar energy is converted into electrical energy and through it, the audio system is activated. Each pair of bicycles produces a sound of musical instruments and together plays a symphony of a well-known song. Pedal and find out what song you can play, the applause will come at the end.