There's a short mistake at 30:19 of just four seconds - a misplace when editing the video. The staff that briefly appears is incorrect, the correct one follows immediately. Sorry!
Couperin is a composer from the early-mid barroque the trío concept appears in the clasic period besides, in barroque exist the ""double"" seccion with a similar function but is not neccesary the ""minueto da capo"" concept, that only remains in hands of the composer for example, the polonaise from "orquestal suite 2" apply "polonaise da capo" (Excuse me if my comment is hard to understand, my principal idiom is spanish)