Think of something being picked up again. A tune was put down two hours ago; near the end of the show someone lifts it back out and plays four lines of it. An actor puts down a part, and years later picks the same one up. The dictionary still records an old, dead use of the verb meaning exactly that — to take something up again — and it sits under everything the word does today. What makes a reprise worth a special word is the recognition: you have met this before.
From the word’s history
The source traces both the noun and the verb to Middle English, from Old French reprise, from the verb reprendre, with some senses reborrowed later from modern French. The source also records an obsolete verb sense, to take something up or on again, which is the picture the modern uses sit on.
來源資料把名詞和動詞都追到中古英文，再往前是古法文 reprise，來自動詞 reprendre，有些意思後來又從現代法文借了一次。同一份資料還收了一個已經不用的動詞義「再拿起來」，今天的用法就疊在這個畫面上。
Wiktionary, "reprise"