1. the state or fact of being a author/producer/creator or work.
Authorship, which could once have only been used to describe a person within a writing profession, can be applied to artists within many disciplines. Musicians are authors in their own right, along with journalists, directors, critics and even myself, writing this very post.
The images below are evidence of an activity that I took part in today. The first image shows how as a group we decided on an order of reliability for information. A newspaper article being priority and Wikipedia being the least favorable. The second image shows how as a group we organised the same information formats into categories or either authority/voice or currency/formats.