In Bach's structural design, which element consists of interludes between subject statements?

• A. Exposition
• B. Coda
• C. Episodes
• D. Recapitulation

Answer: (C)

In a fugue, the main idea is heard first as the subject, then it returns in turn in different voices. Between those appearances, Bach often inserts compact developmental sections that take motifs from the subject and reshape them to move the harmony forward. These interludes are called episodes. They create contrast and modulation, leading into the next entry of the subject or its answer without presenting a full new statement of the theme.

Exposition refers to the initial presentation of the subject in multiple voices; a recapitulation is a restatement of material in the home key, common in sonata-like forms; a coda is a concluding tail piece. Since the question focuses on the parts that occur between complete statements of the subject, the best fit is episodes.