clatter vs hit a sour note

clatter

noun
  • A rattling noise; a repetition of abrupt, sharp sounds. 

  • A loud disturbance. 

  • Noisy talk or chatter. 

verb
  • To hit; to smack. 

  • To make a rattling sound. 

  • To chatter noisily or rapidly. 

hit a sour note

How often have the words clatter and hit a sour note occurred in a corpus of books? (source: Google Ngram Viewer )