I'm always trying to encourage people to see the importance of music class. Not everyone who studies science will become a scientist, and not everyone who studies music will be a professional musician. However, both of these subjects are still important because they make people think.
Reading and performing music can be extremely difficult because there are multiple notes at a time and it involves hand/eye coordination. Perfecting a composition is even more difficult because there are subtle techniques that are very important. When students perform a song in front of the class, they're often nervous at first. However, by the end of the year, they've developed a confidence for performing, which also helps them become more confident in everyday life.
Also, creating music can even be more challenging and rewarding. By incorporating music in schools, students increase their intelligence, knowledge, confidence, coordination and personal creativity. All of these things are essential in music and also in real life situations.