You can test it with slow-paced and rhythmic songs. Britney spears's Living You is a very pleasant and crisp song. Paparazzi have a strong sense of rhythm. I used to use this song to test the sound quality of headphones when buying them. If the tenor is high, TVXQ!! "S Shen Changmin has a high-spirited soul, or some female singers in Europe and America have high-pitched songs, and they did well in the exam.