Nomenclature of Mark Richards theme types

Richards introduces theme types that may be strange or unfamiliar to those coming from studying Caplin.12

All possible theme types:


  • Developing means the first phrase is a development: A A2
  • Composite means the second phrase is a departure – so it starts with a brand new idea (a new letter)
  • Sentential means it starts with a presentation: A A(')
  • Periodic means it starts with an antecedent: A B
  • <X> Sentence (e.g. Periodic Sentence) means the second phrase utilizes acceleration