What term refers to the concluding part of a literary or musical composition?

The term that refers to the concluding part of a literary or musical composition is "coda." In music, a coda serves as a concluding passage that often brings a sense of closure to the piece, summarizing its themes and providing a final impression for the listener. It typically follows the primary themes of the composition and can serve to reinforce the work's overall structure and emotional impact.

In literature, a coda can function similarly, wrapping up the narrative and providing a final reflection or takeaway for the reader. This term captures the essence of a conclusion that not only signifies the end but also encapsulates the journey through the preceding material, highlighting its significance.

The other terms do not solely encapsulate this specific function. An "appendix" usually refers to supplementary material added at the end of a book or document, whereas a "finale" often denotes the last part of a performance or event, usually more dramatic. "Summation" typically means to summarize information or bring together various points, which may not specifically denote an artistic conclusion.