bebop vs singing

bebop

noun
  • An early form of modern jazz played by small groups and featuring driving rhythms and complex, often dissonant harmonies. 

verb
  • To participate in bebop jazz, such as by dancing in a way associated with the genre. 

  • To walk in an easygoing, carefree manner. 

singing

noun
  • A gathering for the purpose of singing shape note songs. 

  • The act of using the voice to produce musical sounds; vocalizing. 

  • Disclosing information, or giving evidence about another. 

adj
  • Producing a whistling sound due to the escape of steam. 

  • Smooth and flowing. 

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