singalong vs yodel

singalong

noun
  • A gathering of people who sing together 

adj
  • designed to allow or encourage the audience to sing along 

yodel

noun
  • A song incorporating yodelling. 

  • An act of yodelling. 

verb
  • To sing (a song) in such a way that the voice fluctuates rapidly between the normal chest voice and falsetto. 

How often have the words singalong and yodel occurred in a corpus of books? (source: Google Ngram Viewer )