During this COVID-19 pandemic and lock down, German zookeepers noted that many of the animals seemed depressed and no longer left their dens. The lock down meant no one visiting them, no noise, no children and no adults.
The head zookeeper at the zoo in Cologne (Germany) had an idea. He arranged for a pianist to come to the zoo and play for the animals. The pianist composed a musical piece specifically for the zoo animals.
The attached video shows what happened when the animals heard the piano music.