Can Sing-Alongs only be applied in the lower grades?

Yes. Singing tour teaching is a major form of music teaching in the lower primary grades, which has an irreplaceable role in developing students' musical quality, cultivating their self-confidence and autonomy, and shaping their personalities. It is to improve the musical quality of the lower grades as the main goal, so that students sing, play, jump and move in the singing, playing, jumping and moving to feel the music, understand the music and performance of music, to stimulate their interest in learning music.