A derivative work is a new creation that is based on or derived from one or more existing works, transforming the original material into something new while retaining some elements of the source. This includes adaptations, modifications, or new expressions that are built upon pre-existing works, such as adaptations of novels into films or remixes of songs. Derivative works are important in copyright law as they can be protected by copyright, but they often require permission from the original creator to be legally produced.
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