Redundancy is when a conventional or predictable meaning is created.
Entropy is the opposite of this, the introduction of new meanings that can be seen as unpredictable.
The artist 'Taylor Swift' has a very high level of redundancy, this is due to her genre and also her target audience expectations. She is represented as a very normal, almost 'safe' artist, she keeps within the guidelines of redundancy and doesn't create meanings that connote entropy. Her fan base consists of mostly teenage girls therefore if she were to introduce more entropic elements her fans may react badly.