In general, your problem can be solved in 6-8 classes. Out of tune generally means that you are not singing, and you are in a state of "speaking the lyrics in a certain tone". In fact, it is the process of adjusting to the singing state first. If Professor Yang Jingchun teaches you personally, it is estimated that you can correct it in 3-4 classes. He really has a way to correct this problem. Moreover, the fundamental solution to the natural vocal music teaching method is to transfer people to see if you are stubborn and willing to release and change. .
Hope to adopt