Accelerated learning is actually skipping systematic learning and using some additional auxiliary methods to enable piano learners to complete a piece of music in a short time. For example, mark the score, mark the keys, use various auxiliary apps and so on.

When you lose these auxiliary methods, you become a person who can't play the piano and read music.

If the goal is to learn to play one or several pieces of music, then crash is a good way. For example, playing a song to propose to your sweetheart, with a quick way, achieved the goal.

If the purpose is to choose a favorite tune from the vast piano scores in the future, it is better to practice it systematically.

As fast as a baby's walker, it looks as if it can walk.