Considering that it is difficult to explain all the musical instruments one by one, I thought of taking the difficulty of practicing musical instruments as the starting point and introducing them by categories according to large categories.
The reason why we choose to start with the difficulty of practice is that learning musical instruments inevitably has to go through boring practice links. Whether for children or adults, the simpler the musical instrument is and the faster it can be used, the easier it is to obtain enjoyment and sense of achievement, so as to improve the autonomy of learning.