A mistake that many musicians make when learning to play a piece or musical exercise that they consider difficult, is that from the first moment they try it, they do it at a fast speed, when in reality, if you want to master something, you must begin to a slow speed and gradually increase until you master the piece or exercise at the speed it really goes. Here are some tips to master a difficult piece.
Analyze the piece or exercise
Before you fall on a piece or musical exercise, you must analyze what is happening inside it, so that what you are going to do is done with conscience. Verify in what tone it is, analyze the harmonic progression, the alterations, the changes of tone, the melody. If audio is available, listen to it before trying, to get a general idea of how everything is going.
Do not worry about the speed, she will arrive alone when you master the piece or exercise. At first you should practice slow to register in your brain. When you have practiced the piece at slow speed several times, you will notice that the fingers will do everything on their own, without you thinking about it, then the time will come to increase the speed.
Practice more difficult parts
Throughout a musical piece or musical exercise you will find easy passages that will come out right the first time. You will also find passages that will not turn out right the first time. Those passages that do not go well the first time you pay attention. When you are practicing and you find yourself with a part that you can not do at slow speed, stop in that part and try several times, if possible at an even slower speed, until you learn that part well and it turns out well. After that part comes out well, you can continue on.