The King of Musical Notes

In a creek that has existed for a long time, the water in the creek is crystal clear, and tadpoles swim slowly and elegantly in twos and threes. Suddenly, I don't know who it is? Throwing a stone at them caused the waves to disrupt their direction. They scattered in panic, and their speed became extremely fast. The force of swimming once made the water turbid. But as time went by, the waves disappeared and the water became as clear as before. The tadpoles found their little friends again, calmly and peacefully flicked their little tails and continued swimming lazily and happily!