What term refers to a Baroque orchestral genre that features two contrasting parts, developed at the court of Louis XIV?

The term that refers to a Baroque orchestral genre featuring two contrasting parts, developed at the court of Louis XIV, is indeed the French overture. This genre is characterized by its distinct formal structure, typically opening with a slow introduction followed by a faster, fugal section. The French overture became a staple in royal ceremonies and celebrations, encapsulating the grandeur and elegance of the French court during Louis XIV's reign. Its development was closely associated with composers writing for the court, who emphasized the hierarchical and regal qualities of the music, making it an essential part of the orchestral repertoire of the time.