The crossword solution for the term 'IT MIGHT END ON A HIGH NOTE' is OPERA. OPERA is a form of musical theatre that originated in Italy in the 17th century. It is typically composed of singing and spoken dialogue, accompanied by instruments such as the piano, violin, and cello. It is usually performed in an OPERA house, with elaborate costumes and sets. The music is often very dramatic and powerful, and the stories are often romantic or tragic in nature. OPERA is a popular form of entertainment around the world.