music vs refrain

music

noun
  • A guide to playing or singing a particular tune; sheet music. 

  • A series of sounds organized in time, usually employing some combination of melody, harmony, tempo, rhythm etc. usually to convey a mood. 

  • An art form, created by organizing of pitch, rhythm, and sounds made using musical instruments and sometimes singing. 

  • Any pleasing or interesting sounds. 

  • Electronic signal jamming. 

verb
  • To seduce or entice with music. 

refrain

noun
  • The chorus or burden of a song repeated at the end of each verse or stanza. 

  • A much repeated comment, complaint, or saying. 

verb
  • To stop oneself from some action or interference; to abstain. 

  • To abstain from (food or drink). 

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