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.