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With all the respect no one shouldn't forbid you to edit articles that you want. But when it comes to that edit, I am afraid that Calvin was right. When you add information, every info should be sourced. Plus I have also previously told you that with stuff like live performances or notes/synopsis you should not include great details or stuff that is not in the source. For further information see Wikipedia:Sourcing. You will learn, I am always open to help you. —  (talk) "