What country does yodelling come from?

Yodeling is a form of singing in which an extended note is repeated in different pitches, making a high sound, then low, high, low, high, low. Yodeling was developed in the Central Alps as a means of communication used by mountaineers, which later turned into Alpine Folk Music. The Central Alps, where yodeling originated, are in Switzerland, therefore, yoDELLing comes from the country of Switzerland.