What is the most difficult instrument to learn?

Personally, I think the most difficult instrument to learn is the national instrument pipa.

Pipa is a plucked instrument and a plucked instrument. The speaker is made of wood, semi-pear-shaped, with four strings, mostly steel wire, steel rope and nylon. The neck and panel are equipped to determine phonemes? Item? And then what? Product? . When playing, people sit up straight on the bench, press the strings with their left hands and play with their right fingers. As modern metal strings are used, fake nails should be worn on the finger of the right hand when playing. Have you passed the pipa? Play? And then what? Pick? There are two basic skills to realize playing: pipa plays forward with its right hand and arpeggio plays backward with its right hand. What is the structure of pipa? Boss? With what? Body? It consists of two parts. The head consists of a chord groove, four chord axes and a mountain pass. The fuselage includes phase, taste, sound box, hand cover and other parts. Pipa is composed of six phases and twenty-five tones, which constitutes the twelve-tone average law and has a wide range. One string is made of steel wire, and the second, third and fourth strings are made of nylon wrapped with steel rope.

I think the difficulty of pipa lies in its many playing techniques, wide range and complicated skills, which are difficult to master. Because pipa is played by plucking the strings, plucking and plucking are just two basic techniques, and there are many more complicated techniques, such as rolling, double plucking, double plucking, rolling, wheeling, sweeping and plucking. Although there are not many harmonies in the pipa, there are many tones, including A, B, C, D, E, F and G, and each tone has a different position on the pipa, so it is difficult to find out each tone correctly and it is easy to confuse these tones. When you first start learning pipa, you should learn D key first, and take D key as the tuning standard. Therefore, if you want to play a good song, you need a high degree of cooperation between your left hand and your right hand, as well as the accuracy of your right hand. In addition, your sense of rhythm is mostly a test of basic skills, so it is very important to practice basic skills if you want to learn pipa well.