Very necessary. In the past two years, there have been many franchise brands in musical instruments, and this industry is gradually standardized. In the future, no matter whether you learn or buy a piano, most people will still recognize the brand, so choosing a brand is very important. At present, there are Helen Piano Classroom, Zhou Fei New Concept, Jody Children's Piano, etc. But personally I think Helen did a good job. Their ideas are different from those of other franchisees. Many just pay attention to the change of teaching methods. They have a trinity of teaching, piano and competition. It is not surprising that many small music companies don't understand this model. Otherwise, how can you call it a small musical instrument store? These are all things that big music stores can do, but if you look back, if your music stores are all connected in a big direction,