1) Higher calling 2) Mountain air 3) Singing 4) Singing in Switzerland 5) Vocalizing 
Yodeling (also yodelling or jodeling) is a form of singing which involves repeated changes of pitch during a single note. The singer quickly switches between the low-pitch chest register (or `chest voice`) and the high-pitch head register or falsetto. The English word yodel is derived from the German (and originally Austro-Bavarian) word jodeln,.....
• (p. pr. & vb. n.) of Yodle
[n] - singing by changing back and forth between the chest voice and a falsetto
noun singing by changing back and forth between the chest voice and a falsetto